gnunet_crypto_lib.h File Reference

cryptographic primitives for GNUnet More...

#include <stdbool.h>
#include <sodium.h>
#include <gcrypt.h>

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Data Structures
struct	GNUNET_CRYPTO_HashAsciiEncoded
	0-terminated ASCII encoding of a struct GNUNET_HashCode. More...
struct	GNUNET_CRYPTO_EccSignaturePurpose
	header of what an ECC signature signs this must be followed by "size - 8" bytes of the actual signed data More...
struct	GNUNET_CRYPTO_EddsaSignature
	an ECC signature using EdDSA. More...
struct	GNUNET_CRYPTO_EcdsaSignature
	an ECC signature using ECDSA More...
struct	GNUNET_CRYPTO_EddsaPublicKey
	Public ECC key (always for curve Ed25519) encoded in a format suitable for network transmission and EdDSA signatures. More...
struct	GNUNET_CRYPTO_EcdsaPublicKey
	Public ECC key (always for Curve25519) encoded in a format suitable for network transmission and ECDSA signatures. More...
struct	GNUNET_PeerIdentity
	The identity of the host (wraps the signing key of the peer). More...
struct	GNUNET_CRYPTO_EcdhePublicKey
	Public ECC key (always for Curve25519) encoded in a format suitable for network transmission and encryption (ECDH), See http://cr.yp.to/ecdh.html. More...
struct	GNUNET_CRYPTO_EcdhePrivateKey
	Private ECC key encoded for transmission. More...
struct	GNUNET_CRYPTO_EcdsaPrivateKey
	Private ECC key encoded for transmission. More...
struct	GNUNET_CRYPTO_EddsaPrivateKey
	Private ECC key encoded for transmission. More...
struct	GNUNET_CRYPTO_EddsaPrivateScalar
	Private ECC scalar encoded for transmission. More...
struct	GNUNET_CRYPTO_Edx25519PrivateKey
	Private ECC key material encoded for transmission. More...
struct	GNUNET_CRYPTO_Edx25519PublicKey
	Public ECC key (always for curve Ed25519) encoded in a format suitable for network transmission and Edx25519 (same as EdDSA) signatures. More...
struct	GNUNET_CRYPTO_Edx25519Signature
	an ECC signature using Edx25519 (same as in EdDSA). More...
struct	GNUNET_CRYPTO_ElligatorEcdhePrivateKey
	Special private ECC key generated by GNUNET_CRYPTO_ecdhe_elligator_key_create. More...
struct	GNUNET_CRYPTO_ElligatorRepresentative
	Elligator representative (always for Curve25519) More...
struct	GNUNET_CRYPTO_PrivateKey
	A private key for an identity as per LSD0001. More...
struct	GNUNET_CRYPTO_PublicKey
	An identity key as per LSD0001. More...
struct	GNUNET_CRYPTO_Signature
	An identity signature as per LSD0001. More...
struct	GNUNET_CRYPTO_SymmetricSessionKey
	type for session keys More...
struct	GNUNET_CRYPTO_ChallengeNonceP
	Type of a nonce used for challenges. More...
struct	GNUNET_CRYPTO_SymmetricInitializationVector
	IV for sym cipher. More...
struct	GNUNET_CRYPTO_AuthKey
	type for (message) authentication keys More...
struct	GNUNET_CRYPTO_PaillierPublicKey
	Paillier public key. More...
struct	GNUNET_CRYPTO_PaillierPrivateKey
	Paillier private key. More...
struct	GNUNET_CRYPTO_PaillierCiphertext
	Paillier ciphertext. More...
struct	GNUNET_CRYPTO_Cs25519Scalar
	Curve25519 Scalar. More...
struct	GNUNET_CRYPTO_Cs25519Point
	Curve25519 point. More...
struct	GNUNET_CRYPTO_CsPrivateKey
	The private information of an Schnorr key pair. More...
struct	GNUNET_CRYPTO_CsPublicKey
	The public information of an Schnorr key pair. More...
struct	GNUNET_CRYPTO_CsBlindingSecret
	Secret used for blinding (alpha and beta). More...
struct	GNUNET_CRYPTO_CsRSecret
	the private r used in the signature More...
struct	GNUNET_CRYPTO_CsRPublic
	the public R (derived from r) used in c More...
struct	GNUNET_CRYPTO_CsC
	Schnorr c to be signed. More...
struct	GNUNET_CRYPTO_CsS
	s in the signature More...
struct	GNUNET_CRYPTO_CsBlindS
	blinded s in the signature More...
struct	GNUNET_CRYPTO_CsSignature
	CS Signtature containing scalar s and point R. More...
struct	GNUNET_CRYPTO_CsSessionNonce
	Nonce for the session, picked by client, shared with the signer. More...
struct	GNUNET_CRYPTO_CsBlindingNonce
	Nonce for computing blinding factors. More...
struct	GNUNET_CRYPTO_PowSalt
	Value for a salt for GNUNET_CRYPTO_pow_hash(). More...
struct	GNUNET_CRYPTO_EccPoint
	Point on a curve (always for Curve25519) encoded in a format suitable for network transmission (ECDH), see http://cr.yp.to/ecdh.html. More...
struct	GNUNET_CRYPTO_EccScalar
	A ECC scalar for use in point multiplications. More...
struct	GNUNET_CRYPTO_HpkeContext
	HPKE crypto context. More...
struct	GNUNET_CRYPTO_HpkeEncapsulation
	HPKE DHKEM encapsulation (X25519) See RFC 9180. More...
struct	GNUNET_CRYPTO_RsaBlindingKeySecret
	Constant-size pre-secret for blinding key generation. More...
struct	GNUNET_CRYPTO_RsaBlindedMessage
	RSA Parameters to create blinded signature. More...
struct	GNUNET_CRYPTO_CsBlindedMessage
	CS Parameters derived from the message during blinding to create blinded signature. More...
struct	GNUNET_CRYPTO_CSPublicRPairP
	Pair of Public R values for Cs denominations. More...
struct	GNUNET_CRYPTO_CsBlindSignature
	The Sign Answer for Clause Blind Schnorr signature. More...
struct	GNUNET_CRYPTO_UnblindedSignature
	Type of (unblinded) signatures. More...
struct	GNUNET_CRYPTO_BlindedSignature
	Type for blinded signatures. More...
struct	GNUNET_CRYPTO_BlindSignPublicKey
	Type of public signing keys for blind signatures. More...
struct	GNUNET_CRYPTO_BlindSignPrivateKey
	Type of private signing keys for blind signing. More...
struct	GNUNET_CRYPTO_BlindedMessage
	Blinded message ready for blind signing. More...
struct	GNUNET_CRYPTO_CSPrivateRPairP
	Secret r for Cs denominations. More...
struct	GNUNET_CRYPTO_BlindingInputValues
	Input needed for blinding a message. More...
union	GNUNET_CRYPTO_BlindSessionNonce
	Nonce used to deterministiacally derive input values used in multi-round blind signature protocols. More...
union	GNUNET_CRYPTO_BlindingSecretP
	Type of blinding secrets. More...

Macros
#define	GNUNET_CRYPTO_ECC_SIGNATURE_DATA_ENCODING_LENGTH   126
	Maximum length of an ECC signature.
#define	GNUNET_CRYPTO_AES_KEY_LENGTH   (256 / 8)
	length of the sessionkey in bytes (256 BIT sessionkey)
#define	GNUNET_CRYPTO_HASH_LENGTH   (512 / 8)
	Length of a hash value.
#define	GNUNET_CRYPTO_PKEY_ASCII_LENGTH   52
	How many characters (without 0-terminator) are our ASCII-encoded public keys (ECDSA/EDDSA/ECDHE).
#define	GNUNET_CRYPTO_PAILLIER_BITS   2048
	Size of paillier plain texts and public keys.
#define	GNUNET_CRYPTO_hash_from_string(enc, result)    GNUNET_CRYPTO_hash_from_string2 (enc, strlen (enc), result)
	Convert ASCII encoding back to struct GNUNET_HashCode
#define	GNUNET_CRYPTO_HPKE_AEAD_ID   0x0003
#define	GNUNET_CRYPTO_HPKE_NONCE_LEN   12
#define	GNUNET_CRYPTO_HPKE_KEY_LEN   32
#define	GNUNET_CRYPTO_HPKE_TAG_LEN   16
#define	GNUNET_CRYPTO_HPKE_SEAL_OVERHEAD_BYTES   GNUNET_CRYPTO_HPKE_TAG_LEN
#define	GNUNET_CRYPTO_HPKE_SEAL_ONESHOT_OVERHEAD_BYTES
#define	GNUNET_CRYPTO_eddsa_sign(priv, ps, sig)
	EdDSA sign a given block.
#define	GNUNET_CRYPTO_ecdsa_sign(priv, ps, sig)
	ECDSA sign a given block.
#define	GNUNET_CRYPTO_edx25519_sign(priv, ps, sig)
	Edx25519 sign a given block.
#define	GNUNET_CRYPTO_eddsa_verify(purp, ps, sig, pub)
	Verify EdDSA signature.
#define	GNUNET_CRYPTO_ecdsa_verify(purp, ps, sig, pub)
	Verify ECDSA signature.
#define	GNUNET_CRYPTO_edx25519_verify(purp, ps, sig, pub)
	Verify Edx25519 signature.
#define	GNUNET_CRYPTO_sign(priv, ps, sig)
	Sign a given block with GNUNET_CRYPTO_PrivateKey.
#define	GNUNET_CRYPTO_signature_verify(purp, ps, sig, pub)
	Verify a given signature with GNUNET_CRYPTO_PublicKey.

Typedefs
typedef void(*	GNUNET_CRYPTO_HashCompletedCallback) (void *cls, const struct GNUNET_HashCode *res)
	Function called once the hash computation over the specified file has completed.

Enumerations
enum	GNUNET_CRYPTO_Quality { GNUNET_CRYPTO_QUALITY_WEAK , GNUNET_CRYPTO_QUALITY_STRONG , GNUNET_CRYPTO_QUALITY_NONCE }
	Desired quality level for random numbers. More...
enum	GNUNET_CRYPTO_KeyType { GNUNET_PUBLIC_KEY_TYPE_ECDSA = 65536 , GNUNET_PUBLIC_KEY_TYPE_EDDSA = 65556 }
	Key type for the generic public key union. More...
enum	GNUNET_CRYPTO_HpkeMode { GNUNET_CRYPTO_HPKE_MODE_BASE = 0x00 , GNUNET_CRYPTO_HPKE_MODE_PSK = 0x01 , GNUNET_CRYPTO_HPKE_MODE_AUTH = 0x02 , GNUNET_CRYPTO_HPKE_MODE_AUTH_PSK = 0x03 }
	HPKE RFC 9180. More...
enum	GNUNET_CRYPTO_HpkeRole { GNUNET_CRYPTO_HPKE_ROLE_R = 0 , GNUNET_CRYPTO_HPKE_ROLE_S = 1 }
	Role of the HPKE participant. More...
enum	GNUNET_CRYPTO_HpkeKem { GNUNET_CRYPTO_HPKE_KEM_DH_X25519_HKDF256 = 0x0020 , GNUNET_CRYPTO_HPKE_KEM_DH_X25519ELLIGATOR_HKDF256 = 0x0030 }
	HPKE KEM identifier TODO: Elligator KEM was requested at IANA; Number is currently a placeholder. More...
enum	GNUNET_CRYPTO_BlindSignatureAlgorithm { GNUNET_CRYPTO_BSA_INVALID = 0 , GNUNET_CRYPTO_BSA_RSA = 1 , GNUNET_CRYPTO_BSA_CS = 2 }
	Types of public keys used for blind signatures. More...

Functions
void	GNUNET_CRYPTO_seed_weak_random (int32_t seed)
	Seed a weak random generator.
uint8_t	GNUNET_CRYPTO_crc8_n (const void *buf, size_t len)
	Calculate the checksum of a buffer in one step.
uint32_t	GNUNET_CRYPTO_crc16_step (uint32_t sum, const void *buf, size_t len)
	Perform an incremental step in a CRC16 (for TCP/IP) calculation.
uint16_t	GNUNET_CRYPTO_crc16_finish (uint32_t sum)
	Convert results from GNUNET_CRYPTO_crc16_step to final crc16.
uint16_t	GNUNET_CRYPTO_crc16_n (const void *buf, size_t len)
	Calculate the checksum of a buffer in one step.
int32_t	GNUNET_CRYPTO_crc32_n (const void *buf, size_t len)
	Compute the CRC32 checksum for the first len bytes of the buffer.
void	GNUNET_CRYPTO_zero_keys (void *buffer, size_t length)
	Zero out buffer, securely against compiler optimizations.
void	GNUNET_CRYPTO_random_block (enum GNUNET_CRYPTO_Quality mode, void *buffer, size_t length)
	Fill block with a random values.
void	GNUNET_CRYPTO_random_timeflake (enum GNUNET_CRYPTO_Quality mode, struct GNUNET_Uuid *uuid)
	Fill UUID with a timeflake pseudo-random value.
uint32_t	GNUNET_CRYPTO_random_u32 (enum GNUNET_CRYPTO_Quality mode, uint32_t i)
	Produce a random value.
uint64_t	GNUNET_CRYPTO_random_u64 (enum GNUNET_CRYPTO_Quality mode, uint64_t max)
	Generate a random unsigned 64-bit value.
unsigned int *	GNUNET_CRYPTO_random_permute (enum GNUNET_CRYPTO_Quality mode, unsigned int n)
	Get an array with a random permutation of the numbers 0...n-1.
void	GNUNET_CRYPTO_symmetric_create_session_key (struct GNUNET_CRYPTO_SymmetricSessionKey *key)
	Create a new random session key.
ssize_t	GNUNET_CRYPTO_symmetric_encrypt (const void *block, size_t size, const struct GNUNET_CRYPTO_SymmetricSessionKey *sessionkey, const struct GNUNET_CRYPTO_SymmetricInitializationVector *iv, void *result)
	Encrypt a block using a symmetric sessionkey.
ssize_t	GNUNET_CRYPTO_symmetric_decrypt (const void *block, size_t size, const struct GNUNET_CRYPTO_SymmetricSessionKey *sessionkey, const struct GNUNET_CRYPTO_SymmetricInitializationVector *iv, void *result)
	Decrypt a given block using a symmetric sessionkey.
void	GNUNET_CRYPTO_symmetric_derive_iv (struct GNUNET_CRYPTO_SymmetricInitializationVector *iv, const struct GNUNET_CRYPTO_SymmetricSessionKey *skey, const void *salt, size_t salt_len,...)
	Derive an IV.
void	GNUNET_CRYPTO_symmetric_derive_iv_v (struct GNUNET_CRYPTO_SymmetricInitializationVector *iv, const struct GNUNET_CRYPTO_SymmetricSessionKey *skey, const void *salt, size_t salt_len, va_list argp)
	Derive an IV.
void	GNUNET_CRYPTO_hash_to_enc (const struct GNUNET_HashCode *block, struct GNUNET_CRYPTO_HashAsciiEncoded *result)
	Convert hash to ASCII encoding.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hash_from_string2 (const char *enc, size_t enclen, struct GNUNET_HashCode *result)
	Convert ASCII encoding back to a 'struct GNUNET_HashCode'.
uint32_t	GNUNET_CRYPTO_hash_distance_u32 (const struct GNUNET_HashCode *a, const struct GNUNET_HashCode *b)
	Compute the distance between 2 hashcodes.
void	GNUNET_CRYPTO_hash (const void *block, size_t size, struct GNUNET_HashCode *ret)
	Compute hash of a given block.
void	GNUNET_CRYPTO_pow_hash (const struct GNUNET_CRYPTO_PowSalt *salt, const void *buf, size_t buf_len, struct GNUNET_HashCode *result)
	Calculate the 'proof-of-work' hash (an expensive hash).
struct GNUNET_HashContext *	GNUNET_CRYPTO_hash_context_start (void)
	Start incremental hashing operation.
struct GNUNET_HashContext *	GNUNET_CRYPTO_hash_context_copy (const struct GNUNET_HashContext *hc)
	Make a copy of the hash computation.
void	GNUNET_CRYPTO_hash_context_read (struct GNUNET_HashContext *hc, const void *buf, size_t size)
	Add data to be hashed.
void	GNUNET_CRYPTO_hash_context_finish (struct GNUNET_HashContext *hc, struct GNUNET_HashCode *r_hash)
	Finish the hash computation.
void	GNUNET_CRYPTO_hash_context_abort (struct GNUNET_HashContext *hc)
	Abort hashing, do not bother calculating final result.
void	GNUNET_CRYPTO_hmac_raw (const void *key, size_t key_len, const void *plaintext, size_t plaintext_len, struct GNUNET_HashCode *hmac)
	Calculate HMAC of a message (RFC 2104) TODO: Shouldn't this be the standard hmac function and the above be renamed?
void	GNUNET_CRYPTO_hmac (const struct GNUNET_CRYPTO_AuthKey *key, const void *plaintext, size_t plaintext_len, struct GNUNET_HashCode *hmac)
	Calculate HMAC of a message (RFC 2104)
struct GNUNET_CRYPTO_FileHashContext *	GNUNET_CRYPTO_hash_file (enum GNUNET_SCHEDULER_Priority priority, const char *filename, size_t blocksize, GNUNET_CRYPTO_HashCompletedCallback callback, void *callback_cls)
	Compute the hash of an entire file.
void	GNUNET_CRYPTO_hash_file_cancel (struct GNUNET_CRYPTO_FileHashContext *fhc)
	Cancel a file hashing operation.
void	GNUNET_CRYPTO_hash_create_random (enum GNUNET_CRYPTO_Quality mode, struct GNUNET_HashCode *result)
	Create a random hash code.
void	GNUNET_CRYPTO_hash_difference (const struct GNUNET_HashCode *a, const struct GNUNET_HashCode *b, struct GNUNET_HashCode *result)
	compute result = b - a
void	GNUNET_CRYPTO_hash_sum (const struct GNUNET_HashCode *a, const struct GNUNET_HashCode *delta, struct GNUNET_HashCode *result)
	compute result = a + delta
void	GNUNET_CRYPTO_hash_xor (const struct GNUNET_HashCode *a, const struct GNUNET_HashCode *b, struct GNUNET_HashCode *result)
	compute result = a ^ b
unsigned int	GNUNET_CRYPTO_hash_count_leading_zeros (const struct GNUNET_HashCode *h)
	Count the number of leading 0 bits in h.
unsigned int	GNUNET_CRYPTO_hash_count_tailing_zeros (const struct GNUNET_HashCode *h)
	Count the number of tailing 0 bits in h.
void	GNUNET_CRYPTO_hash_to_aes_key (const struct GNUNET_HashCode *hc, struct GNUNET_CRYPTO_SymmetricSessionKey *skey, struct GNUNET_CRYPTO_SymmetricInitializationVector *iv)
	Convert a hashcode into a key.
int	GNUNET_CRYPTO_hash_cmp (const struct GNUNET_HashCode *h1, const struct GNUNET_HashCode *h2)
	Compare function for HashCodes, producing a total ordering of all hashcodes.
int	GNUNET_CRYPTO_hash_xorcmp (const struct GNUNET_HashCode *h1, const struct GNUNET_HashCode *h2, const struct GNUNET_HashCode *target)
	Find out which of the two GNUNET_CRYPTO_hash codes is closer to target in the XOR metric (Kademlia).
void	GNUNET_CRYPTO_hmac_derive_key_v (struct GNUNET_CRYPTO_AuthKey *key, const struct GNUNET_CRYPTO_SymmetricSessionKey *rkey, const void *salt, size_t salt_len, va_list argp)
	Derive an authentication key.
void	GNUNET_CRYPTO_hmac_derive_key (struct GNUNET_CRYPTO_AuthKey *key, const struct GNUNET_CRYPTO_SymmetricSessionKey *rkey, const void *salt, size_t salt_len,...)
	Derive an authentication key.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hkdf_extract (struct GNUNET_ShortHashCode *prk, const void *salt, size_t salt_len, const void *ikm, size_t ikm_len)
	HKDF-Extract using SHA256.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hkdf_expand (void *result, size_t out_len, const struct GNUNET_ShortHashCode *prk,...)
	HKDF-Expand using SHA256.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hkdf_expand_v (void *result, size_t out_len, const struct GNUNET_ShortHashCode *prk, va_list argp)
	HKDF-Expand using SHA256.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hkdf_gnunet (void *result, size_t out_len, const void *xts, size_t xts_len, const void *skm, size_t skm_len,...)
	A peculiar HKDF instantiation that tried to mimic Truncated NMAC.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hkdf_gnunet_v (void *result, size_t out_len, const void *xts, size_t xts_len, const void *skm, size_t skm_len, va_list argp)
	Derive key.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_kdf_v (void *result, size_t out_len, const void *xts, size_t xts_len, const void *skm, size_t skm_len, va_list argp)
	Derive key.
void	GNUNET_CRYPTO_kdf_mod_mpi (gcry_mpi_t *r, gcry_mpi_t n, const void *xts, size_t xts_len, const void *skm, size_t skm_len, const char *ctx)
	Deterministically generate a pseudo-random number uniformly from the integers modulo a libgcrypt mpi.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_kdf (void *result, size_t out_len, const void *xts, size_t xts_len, const void *skm, size_t skm_len,...)
	Derive key.
void	GNUNET_CRYPTO_ecdsa_key_get_public (const struct GNUNET_CRYPTO_EcdsaPrivateKey *priv, struct GNUNET_CRYPTO_EcdsaPublicKey *pub)
	Extract the public key for the given private key.
void	GNUNET_CRYPTO_eddsa_key_get_public (const struct GNUNET_CRYPTO_EddsaPrivateKey *priv, struct GNUNET_CRYPTO_EddsaPublicKey *pub)
	Extract the public key for the given private key.
void	GNUNET_CRYPTO_edx25519_key_get_public (const struct GNUNET_CRYPTO_Edx25519PrivateKey *priv, struct GNUNET_CRYPTO_Edx25519PublicKey *pub)
	Extract the public key for the given private key.
void	GNUNET_CRYPTO_ecdhe_key_get_public (const struct GNUNET_CRYPTO_EcdhePrivateKey *priv, struct GNUNET_CRYPTO_EcdhePublicKey *pub)
	Extract the public key for the given private key.
char *	GNUNET_CRYPTO_ecdsa_public_key_to_string (const struct GNUNET_CRYPTO_EcdsaPublicKey *pub)
	Convert a public key to a string.
char *	GNUNET_CRYPTO_ecdsa_private_key_to_string (const struct GNUNET_CRYPTO_EcdsaPrivateKey *priv)
	Convert a private key to a string.
char *	GNUNET_CRYPTO_eddsa_private_key_to_string (const struct GNUNET_CRYPTO_EddsaPrivateKey *priv)
	Convert a private key to a string.
char *	GNUNET_CRYPTO_eddsa_public_key_to_string (const struct GNUNET_CRYPTO_EddsaPublicKey *pub)
	Convert a public key to a string.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_ecdsa_public_key_from_string (const char *enc, size_t enclen, struct GNUNET_CRYPTO_EcdsaPublicKey *pub)
	Convert a string representing a public key to a public key.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_eddsa_private_key_from_string (const char *enc, size_t enclen, struct GNUNET_CRYPTO_EddsaPrivateKey *priv)
	Convert a string representing a private key to a private key.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_eddsa_public_key_from_string (const char *enc, size_t enclen, struct GNUNET_CRYPTO_EddsaPublicKey *pub)
	Convert a string representing a public key to a public key.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_ecdsa_key_from_file (const char *filename, int do_create, struct GNUNET_CRYPTO_EcdsaPrivateKey *pkey)
	Create a new private key by reading it from a file.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_eddsa_key_from_file (const char *filename, int do_create, struct GNUNET_CRYPTO_EddsaPrivateKey *pkey)
	Create a new private key by reading it from a file.
struct GNUNET_CRYPTO_EddsaPrivateKey *	GNUNET_CRYPTO_eddsa_key_create_from_configuration (const struct GNUNET_CONFIGURATION_Handle *cfg)
	Create a new private key by reading our peer's key from the file specified in the configuration.
void	GNUNET_CRYPTO_ecdsa_key_create (struct GNUNET_CRYPTO_EcdsaPrivateKey *pk)
	Create a new private key.
void	GNUNET_CRYPTO_eddsa_key_create (struct GNUNET_CRYPTO_EddsaPrivateKey *pk)
	Create a new private key.
void	GNUNET_CRYPTO_edx25519_key_create (struct GNUNET_CRYPTO_Edx25519PrivateKey *pk)
	Create a new private key.
void	GNUNET_CRYPTO_edx25519_key_create_from_seed (const void *seed, size_t seedsize, struct GNUNET_CRYPTO_Edx25519PrivateKey *pk)
	Create a new private key for Edx25519 from a given seed.
void	GNUNET_CRYPTO_ecdhe_key_create (struct GNUNET_CRYPTO_EcdhePrivateKey *pk)
	Create a new private key.
void	GNUNET_CRYPTO_eddsa_key_clear (struct GNUNET_CRYPTO_EddsaPrivateKey *pk)
	Clear memory that was used to store a private key.
void	GNUNET_CRYPTO_ecdsa_key_clear (struct GNUNET_CRYPTO_EcdsaPrivateKey *pk)
	Clear memory that was used to store a private key.
void	GNUNET_CRYPTO_edx25519_key_clear (struct GNUNET_CRYPTO_Edx25519PrivateKey *pk)
	Clear memory that was used to store a private key.
void	GNUNET_CRYPTO_ecdhe_key_clear (struct GNUNET_CRYPTO_EcdhePrivateKey *pk)
	Clear memory that was used to store a private key.
void	GNUNET_CRYPTO_private_key_clear (struct GNUNET_CRYPTO_PrivateKey *pk)
	Clear memory that was used to store a private key.
const struct GNUNET_CRYPTO_EcdsaPrivateKey *	GNUNET_CRYPTO_ecdsa_key_get_anonymous (void)
	Get the shared private key we use for anonymous users.
void	GNUNET_CRYPTO_eddsa_setup_hostkey (const char *cfg_name)
	Setup a hostkey file for a peer given the name of the configuration file (!).
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_get_peer_identity (const struct GNUNET_CONFIGURATION_Handle *cfg, struct GNUNET_PeerIdentity *dst)
	Retrieve the identity of the host's peer.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_sign_by_peer_identity (const struct GNUNET_CONFIGURATION_Handle *cfg, const struct GNUNET_CRYPTO_EccSignaturePurpose *purpose, struct GNUNET_CRYPTO_EddsaSignature *sig)
	Sign a given block with a specific purpose using the host's peer identity.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_verify_peer_identity (uint32_t purpose, const struct GNUNET_CRYPTO_EccSignaturePurpose *validate, const struct GNUNET_CRYPTO_EddsaSignature *sig, const struct GNUNET_PeerIdentity *identity)
	Verify a given signature with a peer's identity.
struct GNUNET_CRYPTO_EccDlogContext *	GNUNET_CRYPTO_ecc_dlog_prepare (unsigned int max, unsigned int mem)
	Do pre-calculation for ECC discrete logarithm for small factors.
int	GNUNET_CRYPTO_ecc_dlog (struct GNUNET_CRYPTO_EccDlogContext *edc, const struct GNUNET_CRYPTO_EccPoint *input)
	Calculate ECC discrete logarithm for small factors.
void	GNUNET_CRYPTO_ecc_dexp (int val, struct GNUNET_CRYPTO_EccPoint *r)
	Multiply the generator g of the elliptic curve by val to obtain the point on the curve representing val.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_ecc_dexp_mpi (const struct GNUNET_CRYPTO_EccScalar *val, struct GNUNET_CRYPTO_EccPoint *r)
	Multiply the generator g of the elliptic curve by val to obtain the point on the curve representing val.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_ecc_pmul_mpi (const struct GNUNET_CRYPTO_EccPoint *p, const struct GNUNET_CRYPTO_EccScalar *val, struct GNUNET_CRYPTO_EccPoint *r)
	Multiply the point p on the elliptic curve by val.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_ecc_add (const struct GNUNET_CRYPTO_EccPoint *a, const struct GNUNET_CRYPTO_EccPoint *b, struct GNUNET_CRYPTO_EccPoint *r)
	Add two points on the elliptic curve.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_ecc_rnd (struct GNUNET_CRYPTO_EccPoint *r, struct GNUNET_CRYPTO_EccPoint *r_inv)
	Obtain a random point on the curve and its additive inverse.
void	GNUNET_CRYPTO_ecc_rnd_mpi (struct GNUNET_CRYPTO_EccScalar *r, struct GNUNET_CRYPTO_EccScalar *r_neg)
	Obtain a random scalar for point multiplication on the curve and its additive inverse.
void	GNUNET_CRYPTO_ecc_random_mod_n (struct GNUNET_CRYPTO_EccScalar *r)
	Generate a random value mod n.
void	GNUNET_CRYPTO_ecc_dlog_release (struct GNUNET_CRYPTO_EccDlogContext *dlc)
	Release precalculated values.
void	GNUNET_CRYPTO_ecc_scalar_from_int (int64_t val, struct GNUNET_CRYPTO_EccScalar *r)
	Create a scalar from int value.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_ecc_ecdh (const struct GNUNET_CRYPTO_EcdhePrivateKey *priv, const struct GNUNET_CRYPTO_EcdhePublicKey *pub, struct GNUNET_HashCode *key_material)
	Derive key material from a public and a private ECC key.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_eddsa_ecdh (const struct GNUNET_CRYPTO_EddsaPrivateKey *priv, const struct GNUNET_CRYPTO_EcdhePublicKey *pub, struct GNUNET_HashCode *key_material)
	Derive key material from a ECDH public key and a private EdDSA key.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_x25519_ecdh (const struct GNUNET_CRYPTO_EcdhePrivateKey *sk, const struct GNUNET_CRYPTO_EcdhePublicKey *pk, struct GNUNET_CRYPTO_EcdhePublicKey *dh)
	Derive key material from a ECDH public key and a private X25519 key.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hpke_sk_to_x25519 (const struct GNUNET_CRYPTO_PrivateKey *sk, struct GNUNET_CRYPTO_EcdhePrivateKey *x25519)
	Convert a GNUnet identity key to a key sutiable for HPKE (X25519)
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hpke_pk_to_x25519 (const struct GNUNET_CRYPTO_PublicKey *pk, struct GNUNET_CRYPTO_EcdhePublicKey *x25519)
	Convert a GNUnet identity key to a key sutiable for HPKE (X25519)
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hpke_kem_decaps (const struct GNUNET_CRYPTO_EcdhePrivateKey *priv, const struct GNUNET_CRYPTO_HpkeEncapsulation *c, struct GNUNET_ShortHashCode *prk)
	Decapsulate a key for a private X25519 key.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hpke_kem_encaps (const struct GNUNET_CRYPTO_EcdhePublicKey *pkR, struct GNUNET_CRYPTO_HpkeEncapsulation *c, struct GNUNET_ShortHashCode *prk)
	Encapsulate key material for a X25519 public key.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hpke_kem_encaps_norand (const struct GNUNET_CRYPTO_EcdhePublicKey *pkR, struct GNUNET_CRYPTO_HpkeEncapsulation *c, const struct GNUNET_CRYPTO_EcdhePrivateKey *skE, struct GNUNET_ShortHashCode *prk)
	Deterministic variant of GNUNET_CRYPTO_hpke_kem_encaps.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hpke_authkem_encaps_norand (const struct GNUNET_CRYPTO_EcdhePublicKey *pkR, const struct GNUNET_CRYPTO_EcdhePrivateKey *skS, struct GNUNET_CRYPTO_HpkeEncapsulation *c, const struct GNUNET_CRYPTO_EcdhePrivateKey *skE, struct GNUNET_ShortHashCode *shared_secret)
	Encapsulate authenticated key material for a X25519 public key.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hpke_authkem_encaps (const struct GNUNET_CRYPTO_EcdhePublicKey *pkR, const struct GNUNET_CRYPTO_EcdhePrivateKey *skS, struct GNUNET_CRYPTO_HpkeEncapsulation *c, struct GNUNET_ShortHashCode *shared_secret)
	Encapsulate authenticated key material for a X25519 public key.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hpke_authkem_decaps (const struct GNUNET_CRYPTO_EcdhePrivateKey *skR, const struct GNUNET_CRYPTO_EcdhePublicKey *pkS, const struct GNUNET_CRYPTO_HpkeEncapsulation *c, struct GNUNET_ShortHashCode *shared_secret)
	Decapsulate a key for a private X25519 key.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hpke_elligator_kem_encaps_norand (uint8_t random_tweak, const struct GNUNET_CRYPTO_EcdhePublicKey *pkR, struct GNUNET_CRYPTO_HpkeEncapsulation *c, const struct GNUNET_CRYPTO_ElligatorEcdhePrivateKey *skE, struct GNUNET_ShortHashCode *shared_secret)
	Carries out ecdh encapsulation with given public key and the private key from a freshly created ephemeral key pair.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hpke_elligator_kem_encaps (const struct GNUNET_CRYPTO_EcdhePublicKey *pkR, struct GNUNET_CRYPTO_HpkeEncapsulation *c, struct GNUNET_ShortHashCode *shared_secret)
	Carries out ecdh encapsulation with given public key and the private key from a freshly created ephemeral key pair.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hpke_elligator_kem_decaps (const struct GNUNET_CRYPTO_EcdhePrivateKey *skR, const struct GNUNET_CRYPTO_HpkeEncapsulation *c, struct GNUNET_ShortHashCode *shared_secret)
	Carries out ecdh decapsulation with own private key and the representative of the received public key.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hpke_elligator_authkem_decaps (const struct GNUNET_CRYPTO_EcdhePrivateKey *skR, const struct GNUNET_CRYPTO_EcdhePublicKey *pkS, const struct GNUNET_CRYPTO_HpkeEncapsulation *c, struct GNUNET_ShortHashCode *shared_secret)
	Decapsulate a key for a private X25519 key.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_eddsa_kem_decaps (const struct GNUNET_CRYPTO_EddsaPrivateKey *priv, const struct GNUNET_CRYPTO_HpkeEncapsulation *c, struct GNUNET_ShortHashCode *prk)
	Decapsulate a key for a private EdDSA key.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_eddsa_kem_encaps (const struct GNUNET_CRYPTO_EddsaPublicKey *pub, struct GNUNET_CRYPTO_HpkeEncapsulation *c, struct GNUNET_ShortHashCode *prk)
	Encapsulate key material for a EdDSA public key.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hpke_sender_setup (const struct GNUNET_CRYPTO_EcdhePublicKey *pkR, const uint8_t *info, size_t info_len, struct GNUNET_CRYPTO_HpkeEncapsulation *enc, struct GNUNET_CRYPTO_HpkeContext *ctx)
	RFC9180 HPKE encryption.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hpke_sender_setup2 (enum GNUNET_CRYPTO_HpkeKem kem, enum GNUNET_CRYPTO_HpkeMode mode, struct GNUNET_CRYPTO_EcdhePrivateKey *skE, struct GNUNET_CRYPTO_EcdhePrivateKey *skS, const struct GNUNET_CRYPTO_EcdhePublicKey *pkR, const uint8_t *info, size_t info_len, const uint8_t *psk, size_t psk_len, const uint8_t *psk_id, size_t psk_id_len, struct GNUNET_CRYPTO_HpkeEncapsulation *enc, struct GNUNET_CRYPTO_HpkeContext *ctx)
	RFC9180 HPKE encryption.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hpke_receiver_setup2 (enum GNUNET_CRYPTO_HpkeKem kem, enum GNUNET_CRYPTO_HpkeMode mode, const struct GNUNET_CRYPTO_HpkeEncapsulation *enc, const struct GNUNET_CRYPTO_EcdhePrivateKey *skR, const struct GNUNET_CRYPTO_EcdhePublicKey *pkS, const uint8_t *info, size_t info_len, const uint8_t *psk, size_t psk_len, const uint8_t *psk_id, size_t psk_id_len, struct GNUNET_CRYPTO_HpkeContext *ctx)
	RFC9180 HPKE encryption.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hpke_receiver_setup (const struct GNUNET_CRYPTO_HpkeEncapsulation *enc, const struct GNUNET_CRYPTO_EcdhePrivateKey *skR, const uint8_t *info, size_t info_len, struct GNUNET_CRYPTO_HpkeContext *ctx)
	RFC9180 HPKE encryption.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hpke_seal (struct GNUNET_CRYPTO_HpkeContext *ctx, const uint8_t *aad, size_t aad_len, const uint8_t *pt, size_t pt_len, uint8_t *ct, unsigned long long *ct_len)
	RFC9180 HPKE encryption.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hpke_seal_oneshot (const struct GNUNET_CRYPTO_EcdhePublicKey *pkR, const uint8_t *info, size_t info_len, const uint8_t *aad, size_t aad_len, const uint8_t *pt, size_t pt_len, uint8_t *ct, unsigned long long *ct_len)
	RFC9180 HPKE encryption.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hpke_open (struct GNUNET_CRYPTO_HpkeContext *ctx, const uint8_t *aad, size_t aad_len, const uint8_t *ct, size_t ct_len, uint8_t *pt, unsigned long long *pt_len_p)
	RFC9180 HPKE encryption.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_hpke_open_oneshot (const struct GNUNET_CRYPTO_EcdhePrivateKey *skR, const uint8_t *info, size_t info_len, const uint8_t *aad, size_t aad_len, const uint8_t *ct, size_t ct_len, uint8_t *pt, unsigned long long *pt_len)
	RFC9180 HPKE encryption.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_ecdsa_ecdh (const struct GNUNET_CRYPTO_EcdsaPrivateKey *priv, const struct GNUNET_CRYPTO_EcdhePublicKey *pub, struct GNUNET_HashCode *key_material)
	HPKE END.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_ecdh_eddsa (const struct GNUNET_CRYPTO_EcdhePrivateKey *priv, const struct GNUNET_CRYPTO_EddsaPublicKey *pub, struct GNUNET_HashCode *key_material)
	Derive key material from a EdDSA public key and a private ECDH key.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_ecdh_x25519 (const struct GNUNET_CRYPTO_EcdhePrivateKey *priv, const struct GNUNET_CRYPTO_EcdhePublicKey *pub, struct GNUNET_CRYPTO_EcdhePublicKey *dh)
	Derive key material from a EdDSA public key and a private ECDH key.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_ecdh_ecdsa (const struct GNUNET_CRYPTO_EcdhePrivateKey *priv, const struct GNUNET_CRYPTO_EcdsaPublicKey *pub, struct GNUNET_HashCode *key_material)
	Derive key material from a EcDSA public key and a private ECDH key.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_eddsa_sign_ (const struct GNUNET_CRYPTO_EddsaPrivateKey *priv, const struct GNUNET_CRYPTO_EccSignaturePurpose *purpose, struct GNUNET_CRYPTO_EddsaSignature *sig)
	EdDSA sign a given block.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_ecdsa_sign_ (const struct GNUNET_CRYPTO_EcdsaPrivateKey *priv, const struct GNUNET_CRYPTO_EccSignaturePurpose *purpose, struct GNUNET_CRYPTO_EcdsaSignature *sig)
	ECDSA Sign a given block.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_eddsa_sign_raw (const struct GNUNET_CRYPTO_EddsaPrivateKey *priv, void *data, size_t size, struct GNUNET_CRYPTO_EddsaSignature *sig)
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_edx25519_sign_ (const struct GNUNET_CRYPTO_Edx25519PrivateKey *priv, const struct GNUNET_CRYPTO_EccSignaturePurpose *purpose, struct GNUNET_CRYPTO_Edx25519Signature *sig)
	Edx25519 sign a given block.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_eddsa_verify_ (uint32_t purpose, const struct GNUNET_CRYPTO_EccSignaturePurpose *validate, const struct GNUNET_CRYPTO_EddsaSignature *sig, const struct GNUNET_CRYPTO_EddsaPublicKey *pub)
	Verify EdDSA signature.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_ecdsa_verify_ (uint32_t purpose, const struct GNUNET_CRYPTO_EccSignaturePurpose *validate, const struct GNUNET_CRYPTO_EcdsaSignature *sig, const struct GNUNET_CRYPTO_EcdsaPublicKey *pub)
	Verify ECDSA signature.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_edx25519_verify_ (uint32_t purpose, const struct GNUNET_CRYPTO_EccSignaturePurpose *validate, const struct GNUNET_CRYPTO_Edx25519Signature *sig, const struct GNUNET_CRYPTO_Edx25519PublicKey *pub)
	Verify Edx25519 signature.
struct GNUNET_CRYPTO_EcdsaPrivateKey *	GNUNET_CRYPTO_ecdsa_private_key_derive (const struct GNUNET_CRYPTO_EcdsaPrivateKey *priv, const char *label, const char *context)
	Derive a private key from a given private key and a label.
void	GNUNET_CRYPTO_ecdsa_public_key_derive (const struct GNUNET_CRYPTO_EcdsaPublicKey *pub, const char *label, const char *context, struct GNUNET_CRYPTO_EcdsaPublicKey *result)
	Derive a public key from a given public key and a label.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_ecdsa_sign_derived (const struct GNUNET_CRYPTO_EcdsaPrivateKey *pkey, const char *label, const char *context, const struct GNUNET_CRYPTO_EccSignaturePurpose *purpose, struct GNUNET_CRYPTO_EcdsaSignature *sig)
	This is a signature function for ECDSA which takes a private key, derives/blinds it and signs the message.
void	GNUNET_CRYPTO_eddsa_private_key_derive (const struct GNUNET_CRYPTO_EddsaPrivateKey *priv, const char *label, const char *context, struct GNUNET_CRYPTO_EddsaPrivateScalar *result)
	Derive a private scalar from a given private key and a label.
void	GNUNET_CRYPTO_eddsa_public_key_derive (const struct GNUNET_CRYPTO_EddsaPublicKey *pub, const char *label, const char *context, struct GNUNET_CRYPTO_EddsaPublicKey *result)
	Derive a public key from a given public key and a label.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_eddsa_sign_derived (const struct GNUNET_CRYPTO_EddsaPrivateKey *pkey, const char *label, const char *context, const struct GNUNET_CRYPTO_EccSignaturePurpose *purpose, struct GNUNET_CRYPTO_EddsaSignature *sig)
	This is a signature function for EdDSA which takes a private key and derives it using the label and context before signing.
void	GNUNET_CRYPTO_eddsa_key_get_public_from_scalar (const struct GNUNET_CRYPTO_EddsaPrivateScalar *s, struct GNUNET_CRYPTO_EddsaPublicKey *pkey)
	Extract the public key of the given private scalar.
void	GNUNET_CRYPTO_edx25519_private_key_derive (const struct GNUNET_CRYPTO_Edx25519PrivateKey *priv, const void *seed, size_t seedsize, struct GNUNET_CRYPTO_Edx25519PrivateKey *result)
	Derive a private scalar from a given private key and a label.
void	GNUNET_CRYPTO_edx25519_public_key_derive (const struct GNUNET_CRYPTO_Edx25519PublicKey *pub, const void *seed, size_t seedsize, struct GNUNET_CRYPTO_Edx25519PublicKey *result)
	Derive a public key from a given public key and a label.
void	GNUNET_CRYPTO_ecdhe_elligator_decoding (struct GNUNET_CRYPTO_EcdhePublicKey *point, bool *high_y, const struct GNUNET_CRYPTO_ElligatorRepresentative *representative)
	Clears the most significant bit and second most significant bit of the serialized representaive before applying elligator direct map.
bool	GNUNET_CRYPTO_ecdhe_elligator_encoding (uint8_t random_tweak, struct GNUNET_CRYPTO_ElligatorRepresentative *r, const struct GNUNET_CRYPTO_EcdhePublicKey *pub)
	Encodes a point on Curve25519 to a an element of the underlying finite field.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_ecdhe_elligator_key_get_public_norand (uint8_t random_tweak, const struct GNUNET_CRYPTO_ElligatorEcdhePrivateKey *sk, struct GNUNET_CRYPTO_EcdhePublicKey *pub, struct GNUNET_CRYPTO_ElligatorRepresentative *repr)
	Generates a valid public key for elligator's inverse map by adding a lower order point to a prime order point.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_ecdhe_elligator_key_get_public (const struct GNUNET_CRYPTO_ElligatorEcdhePrivateKey *sk, struct GNUNET_CRYPTO_EcdhePublicKey *pub, struct GNUNET_CRYPTO_ElligatorRepresentative *repr)
	Generates a valid public key for elligator's inverse map by adding a lower order point to a prime order point.
void	GNUNET_CRYPTO_ecdhe_elligator_key_create (struct GNUNET_CRYPTO_ElligatorEcdhePrivateKey *sk)
	Generates a private key for Curve25519.
void	GNUNET_CRYPTO_mpi_print_unsigned (void *buf, size_t size, gcry_mpi_t val)
	Output the given MPI value to the given buffer in network byte order.
void	GNUNET_CRYPTO_mpi_scan_unsigned (gcry_mpi_t *result, const void *data, size_t size)
	Convert data buffer into MPI value.
void	GNUNET_CRYPTO_paillier_create (struct GNUNET_CRYPTO_PaillierPublicKey *public_key, struct GNUNET_CRYPTO_PaillierPrivateKey *private_key)
	Create a freshly generated paillier public key.
int	GNUNET_CRYPTO_paillier_encrypt (const struct GNUNET_CRYPTO_PaillierPublicKey *public_key, const gcry_mpi_t m, int desired_ops, struct GNUNET_CRYPTO_PaillierCiphertext *ciphertext)
	Encrypt a plaintext with a paillier public key.
void	GNUNET_CRYPTO_paillier_decrypt (const struct GNUNET_CRYPTO_PaillierPrivateKey *private_key, const struct GNUNET_CRYPTO_PaillierPublicKey *public_key, const struct GNUNET_CRYPTO_PaillierCiphertext *ciphertext, gcry_mpi_t m)
	Decrypt a paillier ciphertext with a private key.
int	GNUNET_CRYPTO_paillier_hom_add (const struct GNUNET_CRYPTO_PaillierPublicKey *public_key, const struct GNUNET_CRYPTO_PaillierCiphertext *c1, const struct GNUNET_CRYPTO_PaillierCiphertext *c2, struct GNUNET_CRYPTO_PaillierCiphertext *result)
	Compute a ciphertext that represents the sum of the plaintext in c1 and c2.
int	GNUNET_CRYPTO_paillier_hom_get_remaining (const struct GNUNET_CRYPTO_PaillierCiphertext *c)
	Get the number of remaining supported homomorphic operations.
struct GNUNET_CRYPTO_RsaPrivateKey *	GNUNET_CRYPTO_rsa_private_key_create (unsigned int len)
	Create a new private key.
void	GNUNET_CRYPTO_rsa_private_key_free (struct GNUNET_CRYPTO_RsaPrivateKey *key)
	Free memory occupied by the private key.
size_t	GNUNET_CRYPTO_rsa_private_key_encode (const struct GNUNET_CRYPTO_RsaPrivateKey *key, void **buffer)
	Encode the private key in a format suitable for storing it into a file.
struct GNUNET_CRYPTO_RsaPrivateKey *	GNUNET_CRYPTO_rsa_private_key_decode (const void *buf, size_t buf_size)
	Decode the private key from the data-format back to the "normal", internal format.
struct GNUNET_CRYPTO_RsaPrivateKey *	GNUNET_CRYPTO_rsa_private_key_dup (const struct GNUNET_CRYPTO_RsaPrivateKey *key)
	Duplicate the given private key.
struct GNUNET_CRYPTO_RsaPublicKey *	GNUNET_CRYPTO_rsa_private_key_get_public (const struct GNUNET_CRYPTO_RsaPrivateKey *priv)
	Extract the public key of the given private key.
void	GNUNET_CRYPTO_rsa_public_key_hash (const struct GNUNET_CRYPTO_RsaPublicKey *key, struct GNUNET_HashCode *hc)
	Compute hash over the public key.
bool	GNUNET_CRYPTO_rsa_public_key_check (const struct GNUNET_CRYPTO_RsaPublicKey *key)
	Check if key is well-formed.
unsigned int	GNUNET_CRYPTO_rsa_public_key_len (const struct GNUNET_CRYPTO_RsaPublicKey *key)
	Obtain the length of the RSA key in bits.
void	GNUNET_CRYPTO_rsa_public_key_free (struct GNUNET_CRYPTO_RsaPublicKey *key)
	Free memory occupied by the public key.
size_t	GNUNET_CRYPTO_rsa_public_key_encode (const struct GNUNET_CRYPTO_RsaPublicKey *key, void **buffer)
	Encode the public key in a format suitable for storing it into a file.
struct GNUNET_CRYPTO_RsaPublicKey *	GNUNET_CRYPTO_rsa_public_key_decode (const char *buf, size_t len)
	Decode the public key from the data-format back to the "normal", internal format.
struct GNUNET_CRYPTO_RsaPublicKey *	GNUNET_CRYPTO_rsa_public_key_dup (const struct GNUNET_CRYPTO_RsaPublicKey *key)
	Duplicate the given public key.
int	GNUNET_CRYPTO_rsa_signature_cmp (const struct GNUNET_CRYPTO_RsaSignature *s1, const struct GNUNET_CRYPTO_RsaSignature *s2)
	Compare the values of two signatures.
int	GNUNET_CRYPTO_rsa_private_key_cmp (const struct GNUNET_CRYPTO_RsaPrivateKey *p1, const struct GNUNET_CRYPTO_RsaPrivateKey *p2)
	Compare the values of two private keys.
int	GNUNET_CRYPTO_rsa_public_key_cmp (const struct GNUNET_CRYPTO_RsaPublicKey *p1, const struct GNUNET_CRYPTO_RsaPublicKey *p2)
	Compare the values of two public keys.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_rsa_blind (const void *message, size_t message_size, const struct GNUNET_CRYPTO_RsaBlindingKeySecret *bks, struct GNUNET_CRYPTO_RsaPublicKey *pkey, struct GNUNET_CRYPTO_RsaBlindedMessage *bm)
	Blinds the given message with the given blinding key.
struct GNUNET_CRYPTO_RsaSignature *	GNUNET_CRYPTO_rsa_sign_blinded (const struct GNUNET_CRYPTO_RsaPrivateKey *key, const struct GNUNET_CRYPTO_RsaBlindedMessage *bm)
	Sign a blinded value, which must be a full domain hash of a message.
struct GNUNET_CRYPTO_RsaSignature *	GNUNET_CRYPTO_rsa_sign_fdh (const struct GNUNET_CRYPTO_RsaPrivateKey *key, const void *message, size_t message_size)
	Create and sign a full domain hash of a message.
void	GNUNET_CRYPTO_rsa_blinded_message_free (struct GNUNET_CRYPTO_RsaBlindedMessage *bm)
	Free memory occupied by blinded message.
void	GNUNET_CRYPTO_rsa_signature_free (struct GNUNET_CRYPTO_RsaSignature *sig)
	Free memory occupied by signature.
size_t	GNUNET_CRYPTO_rsa_signature_encode (const struct GNUNET_CRYPTO_RsaSignature *sig, void **buffer)
	Encode the given signature in a format suitable for storing it into a file.
struct GNUNET_CRYPTO_RsaSignature *	GNUNET_CRYPTO_rsa_signature_decode (const void *buf, size_t buf_size)
	Decode the signature from the data-format back to the "normal", internal format.
struct GNUNET_CRYPTO_RsaSignature *	GNUNET_CRYPTO_rsa_signature_dup (const struct GNUNET_CRYPTO_RsaSignature *sig)
	Duplicate the given rsa signature.
struct GNUNET_CRYPTO_RsaSignature *	GNUNET_CRYPTO_rsa_unblind (const struct GNUNET_CRYPTO_RsaSignature *sig, const struct GNUNET_CRYPTO_RsaBlindingKeySecret *bks, struct GNUNET_CRYPTO_RsaPublicKey *pkey)
	Unblind a blind-signed signature.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_rsa_verify (const void *message, size_t message_size, const struct GNUNET_CRYPTO_RsaSignature *sig, const struct GNUNET_CRYPTO_RsaPublicKey *public_key)
	Verify whether the given hash corresponds to the given signature and the signature is valid with respect to the given public key.
void	GNUNET_CRYPTO_cs_private_key_generate (struct GNUNET_CRYPTO_CsPrivateKey *priv)
	Create a new random private key.
void	GNUNET_CRYPTO_cs_private_key_get_public (const struct GNUNET_CRYPTO_CsPrivateKey *priv, struct GNUNET_CRYPTO_CsPublicKey *pub)
	Extract the public key of the given private key.
void	GNUNET_CRYPTO_cs_r_derive (const struct GNUNET_CRYPTO_CsSessionNonce *nonce, const char *seed, const struct GNUNET_CRYPTO_CsPrivateKey *lts, struct GNUNET_CRYPTO_CsRSecret r[2])
	Derive a new secret r pair r0 and r1.
void	GNUNET_CRYPTO_cs_r_get_public (const struct GNUNET_CRYPTO_CsRSecret *r_priv, struct GNUNET_CRYPTO_CsRPublic *r_pub)
	Extract the public R of the given secret r.
void	GNUNET_CRYPTO_cs_blinding_secrets_derive (const struct GNUNET_CRYPTO_CsBlindingNonce *blind_seed, struct GNUNET_CRYPTO_CsBlindingSecret bs[2])
	Derives new random blinding factors.
void	GNUNET_CRYPTO_cs_calc_blinded_c (const struct GNUNET_CRYPTO_CsBlindingSecret bs[2], const struct GNUNET_CRYPTO_CsRPublic r_pub[2], const struct GNUNET_CRYPTO_CsPublicKey *pub, const void *msg, size_t msg_len, struct GNUNET_CRYPTO_CsC blinded_c[2], struct GNUNET_CRYPTO_CSPublicRPairP *r_pub_blind)
	Calculate two blinded c's.
void	GNUNET_CRYPTO_cs_sign_derive (const struct GNUNET_CRYPTO_CsPrivateKey *priv, const struct GNUNET_CRYPTO_CsRSecret r[2], const struct GNUNET_CRYPTO_CsBlindedMessage *bm, struct GNUNET_CRYPTO_CsBlindSignature *cs_blind_sig)
	Sign a blinded c.
void	GNUNET_CRYPTO_cs_unblind (const struct GNUNET_CRYPTO_CsBlindS *blinded_signature_scalar, const struct GNUNET_CRYPTO_CsBlindingSecret *bs, struct GNUNET_CRYPTO_CsS *signature_scalar)
	Unblind a blind-signed signature using a c that was blinded.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_cs_verify (const struct GNUNET_CRYPTO_CsSignature *sig, const struct GNUNET_CRYPTO_CsPublicKey *pub, const void *msg, size_t msg_len)
	Verify whether the given message corresponds to the given signature and the signature is valid with respect to the given public key.
struct GNUNET_CRYPTO_BlindingInputValues *	GNUNET_CRYPTO_get_blinding_input_values (const struct GNUNET_CRYPTO_BlindSignPrivateKey *bsign_priv, const union GNUNET_CRYPTO_BlindSessionNonce *nonce, const char *salt)
	Compute blinding input values for a given nonce and salt.
void	GNUNET_CRYPTO_blind_sign_pub_decref (struct GNUNET_CRYPTO_BlindSignPublicKey *bsign_pub)
	Decrement reference counter of a bsign_pub, and free it if it reaches zero.
void	GNUNET_CRYPTO_blind_sign_priv_decref (struct GNUNET_CRYPTO_BlindSignPrivateKey *bsign_priv)
	Decrement reference counter of a bsign_priv, and free it if it reaches zero.
void	GNUNET_CRYPTO_unblinded_sig_decref (struct GNUNET_CRYPTO_UnblindedSignature *ub_sig)
	Decrement reference counter of a ub_sig, and free it if it reaches zero.
void	GNUNET_CRYPTO_blinded_sig_decref (struct GNUNET_CRYPTO_BlindedSignature *blind_sig)
	Decrement reference counter of a blind_sig, and free it if it reaches zero.
void	GNUNET_CRYPTO_blinded_message_decref (struct GNUNET_CRYPTO_BlindedMessage *bm)
	Decrement reference counter of a bm, and free it if it reaches zero.
struct GNUNET_CRYPTO_BlindedMessage *	GNUNET_CRYPTO_blinded_message_incref (struct GNUNET_CRYPTO_BlindedMessage *bm)
	Increment reference counter of the given bm.
struct GNUNET_CRYPTO_BlindingInputValues *	GNUNET_CRYPTO_blinding_input_values_incref (struct GNUNET_CRYPTO_BlindingInputValues *bm)
	Increment reference counter of the given bi.
void	GNUNET_CRYPTO_blinding_input_values_decref (struct GNUNET_CRYPTO_BlindingInputValues *bm)
	Decrement reference counter of the given bi, and free it if it reaches zero.
struct GNUNET_CRYPTO_BlindSignPublicKey *	GNUNET_CRYPTO_bsign_pub_incref (struct GNUNET_CRYPTO_BlindSignPublicKey *bsign_pub)
	Increment reference counter of the given bsign_pub.
struct GNUNET_CRYPTO_BlindSignPrivateKey *	GNUNET_CRYPTO_bsign_priv_incref (struct GNUNET_CRYPTO_BlindSignPrivateKey *bsign_priv)
	Increment reference counter of the given bsign_priv.
struct GNUNET_CRYPTO_UnblindedSignature *	GNUNET_CRYPTO_ub_sig_incref (struct GNUNET_CRYPTO_UnblindedSignature *ub_sig)
	Increment reference counter of the given ub_sig.
struct GNUNET_CRYPTO_BlindedSignature *	GNUNET_CRYPTO_blind_sig_incref (struct GNUNET_CRYPTO_BlindedSignature *blind_sig)
	Increment reference counter of the given blind_sig.
int	GNUNET_CRYPTO_bsign_pub_cmp (const struct GNUNET_CRYPTO_BlindSignPublicKey *bp1, const struct GNUNET_CRYPTO_BlindSignPublicKey *bp2)
	Compare two denomination public keys.
int	GNUNET_CRYPTO_ub_sig_cmp (const struct GNUNET_CRYPTO_UnblindedSignature *sig1, const struct GNUNET_CRYPTO_UnblindedSignature *sig2)
	Compare two denomination signatures.
int	GNUNET_CRYPTO_blind_sig_cmp (const struct GNUNET_CRYPTO_BlindedSignature *sig1, const struct GNUNET_CRYPTO_BlindedSignature *sig2)
	Compare two blinded denomination signatures.
int	GNUNET_CRYPTO_blinded_message_cmp (const struct GNUNET_CRYPTO_BlindedMessage *bp1, const struct GNUNET_CRYPTO_BlindedMessage *bp2)
	Compare two blinded messages.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_blind_sign_keys_create (struct GNUNET_CRYPTO_BlindSignPrivateKey **bsign_priv, struct GNUNET_CRYPTO_BlindSignPublicKey **bsign_pub, enum GNUNET_CRYPTO_BlindSignatureAlgorithm cipher,...)
	Initialize public-private key pair for blind signatures.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_blind_sign_keys_create_va (struct GNUNET_CRYPTO_BlindSignPrivateKey **bsign_priv, struct GNUNET_CRYPTO_BlindSignPublicKey **bsign_pub, enum GNUNET_CRYPTO_BlindSignatureAlgorithm cipher, va_list ap)
	Initialize public-private key pair for blind signatures.
struct GNUNET_CRYPTO_BlindedMessage *	GNUNET_CRYPTO_message_blind_to_sign (const struct GNUNET_CRYPTO_BlindSignPublicKey *bsign_pub, const union GNUNET_CRYPTO_BlindingSecretP *bks, const union GNUNET_CRYPTO_BlindSessionNonce *nonce, const void *message, size_t message_size, const struct GNUNET_CRYPTO_BlindingInputValues *alg_values)
	Blind message for blind signing with dk using blinding secret coin_bks.
struct GNUNET_CRYPTO_BlindedSignature *	GNUNET_CRYPTO_blind_sign (const struct GNUNET_CRYPTO_BlindSignPrivateKey *bsign_priv, const char *salt, const struct GNUNET_CRYPTO_BlindedMessage *blinded_message)
	Create blind signature.
struct GNUNET_CRYPTO_UnblindedSignature *	GNUNET_CRYPTO_blind_sig_unblind (const struct GNUNET_CRYPTO_BlindedSignature *blinded_sig, const union GNUNET_CRYPTO_BlindingSecretP *bks, const void *message, size_t message_size, const struct GNUNET_CRYPTO_BlindingInputValues *alg_values, const struct GNUNET_CRYPTO_BlindSignPublicKey *bsign_pub)
	Unblind blind signature.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_blind_sig_verify (const struct GNUNET_CRYPTO_BlindSignPublicKey *bsign_pub, const struct GNUNET_CRYPTO_UnblindedSignature *ub_sig, const void *message, size_t message_size)
	Verify signature made blindly.
ssize_t	GNUNET_CRYPTO_public_key_get_length (const struct GNUNET_CRYPTO_PublicKey *key)
	Get the compacted length of a GNUNET_CRYPTO_PublicKey.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_read_public_key_from_buffer (const void *buffer, size_t len, struct GNUNET_CRYPTO_PublicKey *key, size_t *read)
	Reads a GNUNET_CRYPTO_PublicKey from a compact buffer.
ssize_t	GNUNET_CRYPTO_private_key_get_length (const struct GNUNET_CRYPTO_PrivateKey *key)
	Get the compacted length of a GNUNET_CRYPTO_PrivateKey.
ssize_t	GNUNET_CRYPTO_write_public_key_to_buffer (const struct GNUNET_CRYPTO_PublicKey *key, void *buffer, size_t len)
	Writes a GNUNET_CRYPTO_PublicKey to a compact buffer.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_read_private_key_from_buffer (const void *buffer, size_t len, struct GNUNET_CRYPTO_PrivateKey *key, size_t *read)
	Reads a GNUNET_CRYPTO_PrivateKey from a compact buffer.
ssize_t	GNUNET_CRYPTO_write_private_key_to_buffer (const struct GNUNET_CRYPTO_PrivateKey *key, void *buffer, size_t len)
	Writes a GNUNET_CRYPTO_PrivateKey to a compact buffer.
ssize_t	GNUNET_CRYPTO_signature_get_length (const struct GNUNET_CRYPTO_Signature *sig)
	Get the compacted length of a GNUNET_CRYPTO_Signature.
ssize_t	GNUNET_CRYPTO_signature_get_raw_length_by_type (uint32_t type)
	Get the compacted length of a signature by type.
ssize_t	GNUNET_CRYPTO_read_signature_from_buffer (struct GNUNET_CRYPTO_Signature *sig, const void *buffer, size_t len)
	Reads a GNUNET_CRYPTO_Signature from a compact buffer.
ssize_t	GNUNET_CRYPTO_write_signature_to_buffer (const struct GNUNET_CRYPTO_Signature *sig, void *buffer, size_t len)
	Writes a GNUNET_CRYPTO_Signature to a compact buffer.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_sign_ (const struct GNUNET_CRYPTO_PrivateKey *priv, const struct GNUNET_CRYPTO_EccSignaturePurpose *purpose, struct GNUNET_CRYPTO_Signature *sig)
	Sign a given block.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_sign_raw_ (const struct GNUNET_CRYPTO_PrivateKey *priv, const struct GNUNET_CRYPTO_EccSignaturePurpose *purpose, unsigned char *sig)
	Sign a given block.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_signature_verify_ (uint32_t purpose, const struct GNUNET_CRYPTO_EccSignaturePurpose *validate, const struct GNUNET_CRYPTO_Signature *sig, const struct GNUNET_CRYPTO_PublicKey *pub)
	Verify a given signature.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_signature_verify_raw_ (uint32_t purpose, const struct GNUNET_CRYPTO_EccSignaturePurpose *validate, const unsigned char *sig, const struct GNUNET_CRYPTO_PublicKey *pub)
	Verify a given signature.
char *	GNUNET_CRYPTO_public_key_to_string (const struct GNUNET_CRYPTO_PublicKey *key)
	Creates a (Base32) string representation of the public key.
char *	GNUNET_CRYPTO_private_key_to_string (const struct GNUNET_CRYPTO_PrivateKey *key)
	Creates a (Base32) string representation of the private key.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_public_key_from_string (const char *str, struct GNUNET_CRYPTO_PublicKey *key)
	Parses a (Base32) string representation of the public key.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_private_key_from_string (const char *str, struct GNUNET_CRYPTO_PrivateKey *key)
	Parses a (Base32) string representation of the private key.
enum GNUNET_GenericReturnValue	GNUNET_CRYPTO_key_get_public (const struct GNUNET_CRYPTO_PrivateKey *privkey, struct GNUNET_CRYPTO_PublicKey *key)
	Retrieves the public key representation of a private key.

Detailed Description

cryptographic primitives for GNUnet

Author

Christian Grothoff

Krista Bennett

Gerd Knorr kraxe.nosp@m.l@by.nosp@m.tesex.nosp@m..org

Ioana Patrascu

Tzvetan Horozov

Jeffrey Burdges burdg.nosp@m.es@g.nosp@m.nunet.nosp@m..org

Definition in file gnunet_crypto_lib.h.