GNUnet  0.10.x
Macros | Functions
oidc_helper.h File Reference

helper library for OIDC related functions More...

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Macros

#define JWT_ALG   "alg"
 
#define JWT_ALG_VALUE   "HS512"
 
#define JWT_TYP   "typ"
 
#define JWT_TYP_VALUE   "jwt"
 
#define SERVER_ADDRESS   "https://api.reclaim"
 

Functions

char * OIDC_id_token_new (const struct GNUNET_CRYPTO_EcdsaPublicKey *aud_key, const struct GNUNET_CRYPTO_EcdsaPublicKey *sub_key, const struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList *attrs, const struct GNUNET_TIME_Relative *expiration_time, const char *nonce, const char *secret_key)
 Create a JWT from attributes. More...
 
char * OIDC_build_authz_code (const struct GNUNET_CRYPTO_EcdsaPrivateKey *issuer, const struct GNUNET_RECLAIM_Ticket *ticket, struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList *attrs, const char *nonce)
 Builds an OIDC authorization code including a reclaim ticket and nonce. More...
 
int OIDC_parse_authz_code (const struct GNUNET_CRYPTO_EcdsaPrivateKey *ecdsa_priv, const char *code, struct GNUNET_RECLAIM_Ticket *ticket, struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList **attrs, char **nonce)
 Parse reclaim ticket and nonce from authorization code. More...
 
void OIDC_build_token_response (const char *access_token, const char *id_token, const struct GNUNET_TIME_Relative *expiration_time, char **token_response)
 Build a token response for a token request TODO: Maybe we should add the scope here? More...
 
char * OIDC_access_token_new ()
 Generate a new access token. More...
 

Detailed Description

helper library for OIDC related functions

Author
Martin Schanzenbach

Definition in file oidc_helper.h.

Macro Definition Documentation

◆ JWT_ALG

#define JWT_ALG   "alg"

Definition at line 30 of file oidc_helper.h.

Referenced by create_jwt_header().

◆ JWT_ALG_VALUE

#define JWT_ALG_VALUE   "HS512"

Definition at line 33 of file oidc_helper.h.

Referenced by create_jwt_header().

◆ JWT_TYP

#define JWT_TYP   "typ"

Definition at line 35 of file oidc_helper.h.

Referenced by create_jwt_header().

◆ JWT_TYP_VALUE

#define JWT_TYP_VALUE   "jwt"

Definition at line 37 of file oidc_helper.h.

Referenced by create_jwt_header().

◆ SERVER_ADDRESS

#define SERVER_ADDRESS   "https://api.reclaim"

Definition at line 39 of file oidc_helper.h.

Referenced by OIDC_id_token_new().

Function Documentation

◆ OIDC_id_token_new()

char* OIDC_id_token_new ( const struct GNUNET_CRYPTO_EcdsaPublicKey aud_key,
const struct GNUNET_CRYPTO_EcdsaPublicKey sub_key,
const struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList attrs,
const struct GNUNET_TIME_Relative expiration_time,
const char *  nonce,
const char *  secret_key 
)

Create a JWT from attributes.

Parameters
aud_keythe public of the audience
sub_keythe public key of the subject
attrsthe attribute list
expiration_timethe validity of the token
secret_keythe key used to sign the JWT
Returns
a new base64-encoded JWT string.

Creating the JWT signature. This might not be standards compliant, check.

Definition at line 84 of file oidc_helper.c.

References GNUNET_TIME_Absolute::abs_value_us, GNUNET_RECLAIM_ATTRIBUTE_ClaimListEntry::claim, create_jwt_header(), GNUNET_RECLAIM_ATTRIBUTE_Claim::data, GNUNET_RECLAIM_ATTRIBUTE_Claim::data_size, fix_base64(), GNUNET_asprintf(), GNUNET_CRYPTO_hmac_raw(), GNUNET_free, GNUNET_RECLAIM_ATTRIBUTE_value_to_string(), GNUNET_STRINGS_base64_encode(), GNUNET_STRINGS_data_to_string_alloc(), GNUNET_TIME_absolute_add(), GNUNET_TIME_absolute_get(), GNUNET_RECLAIM_ATTRIBUTE_ClaimList::list_head, GNUNET_RECLAIM_ATTRIBUTE_Claim::name, GNUNET_RECLAIM_ATTRIBUTE_ClaimListEntry::next, result, SERVER_ADDRESS, and GNUNET_RECLAIM_ATTRIBUTE_Claim::type.

Referenced by token_endpoint().

90 {
92  struct GNUNET_HashCode signature;
93  struct GNUNET_TIME_Absolute exp_time;
94  struct GNUNET_TIME_Absolute time_now;
95  char *audience;
96  char *subject;
97  char *header;
98  char *body_str;
99  char *result;
100  char *header_base64;
101  char *body_base64;
102  char *signature_target;
103  char *signature_base64;
104  char *attr_val_str;
105  json_t *body;
106 
107  // iat REQUIRED time now
108  time_now = GNUNET_TIME_absolute_get ();
109  // exp REQUIRED time expired from config
110  exp_time = GNUNET_TIME_absolute_add (time_now, *expiration_time);
111  // auth_time only if max_age
112  // nonce only if nonce
113  // OPTIONAL acr,amr,azp
114  subject =
116  sizeof (struct
118  audience =
120  sizeof (struct
122  header = create_jwt_header ();
123  body = json_object ();
124 
125  // iss REQUIRED case sensitive server uri with https
126  // The issuer is the local reclaim instance (e.g.
127  // https://reclaim.id/api/openid)
128  json_object_set_new (body, "iss", json_string (SERVER_ADDRESS));
129  // sub REQUIRED public key identity, not exceed 255 ASCII length
130  json_object_set_new (body, "sub", json_string (subject));
131  // aud REQUIRED public key client_id must be there
132  json_object_set_new (body, "aud", json_string (audience));
133  // iat
134  json_object_set_new (body,
135  "iat",
136  json_integer (time_now.abs_value_us / (1000 * 1000)));
137  // exp
138  json_object_set_new (body,
139  "exp",
140  json_integer (exp_time.abs_value_us / (1000 * 1000)));
141  // nbf
142  json_object_set_new (body,
143  "nbf",
144  json_integer (time_now.abs_value_us / (1000 * 1000)));
145  // nonce
146  if (NULL != nonce)
147  json_object_set_new (body, "nonce", json_string (nonce));
148 
149  for (le = attrs->list_head; NULL != le; le = le->next)
150  {
151  attr_val_str =
153  le->claim->data,
154  le->claim->data_size);
155  json_object_set_new (body, le->claim->name, json_string (attr_val_str));
156  GNUNET_free (attr_val_str);
157  }
158  body_str = json_dumps (body, JSON_INDENT (0) | JSON_COMPACT);
159  json_decref (body);
160 
161  GNUNET_STRINGS_base64_encode (header, strlen (header), &header_base64);
162  fix_base64 (header_base64);
163 
164  GNUNET_STRINGS_base64_encode (body_str, strlen (body_str), &body_base64);
165  fix_base64 (body_base64);
166 
167  GNUNET_free (subject);
168  GNUNET_free (audience);
169 
174  GNUNET_asprintf (&signature_target, "%s.%s", header_base64, body_base64);
175  GNUNET_CRYPTO_hmac_raw (secret_key,
176  strlen (secret_key),
177  signature_target,
178  strlen (signature_target),
179  &signature);
180  GNUNET_STRINGS_base64_encode ((const char *) &signature,
181  sizeof (struct GNUNET_HashCode),
182  &signature_base64);
183  fix_base64 (signature_base64);
184 
185  GNUNET_asprintf (&result,
186  "%s.%s.%s",
187  header_base64,
188  body_base64,
189  signature_base64);
190 
191  GNUNET_free (signature_target);
192  GNUNET_free (header);
193  GNUNET_free (body_str);
194  GNUNET_free (signature_base64);
195  GNUNET_free (body_base64);
196  GNUNET_free (header_base64);
197  return result;
198 }
const char * name
The name of the attribute.
struct GNUNET_RECLAIM_ATTRIBUTE_Claim * claim
The attribute claim.
char * GNUNET_RECLAIM_ATTRIBUTE_value_to_string(uint32_t type, const void *data, size_t data_size)
Convert the 'claim' of an attribute to a string.
size_t data_size
Number of bytes in data.
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' this be the standard hmac function and the abov...
Definition: crypto_hash.c:383
static char * create_jwt_header(void)
Definition: oidc_helper.c:37
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_add(struct GNUNET_TIME_Absolute start, struct GNUNET_TIME_Relative duration)
Add a given relative duration to the given start time.
Definition: time.c:393
#define SERVER_ADDRESS
Definition: oidc_helper.h:39
const void * data
Binary value stored as attribute value.
int GNUNET_asprintf(char **buf, const char *format,...)
Like asprintf, just portable.
static int result
Global testing status.
A 512-bit hashcode.
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_get(void)
Get the current time.
Definition: time.c:118
static void fix_base64(char *str)
Definition: oidc_helper.c:64
size_t GNUNET_STRINGS_base64_encode(const void *in, size_t len, char **output)
Encode into Base64.
Definition: strings.c:2004
Public ECC key (always for Curve25519) encoded in a format suitable for network transmission and ECDS...
Time for absolute times used by GNUnet, in microseconds.
char * GNUNET_STRINGS_data_to_string_alloc(const void *buf, size_t size)
Return the base32crockford encoding of the given buffer.
Definition: strings.c:988
struct GNUNET_RECLAIM_ATTRIBUTE_ClaimListEntry * next
DLL.
struct GNUNET_RECLAIM_ATTRIBUTE_ClaimListEntry * list_head
List head.
#define GNUNET_free(ptr)
Wrapper around free.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ OIDC_build_authz_code()

char* OIDC_build_authz_code ( const struct GNUNET_CRYPTO_EcdsaPrivateKey issuer,
const struct GNUNET_RECLAIM_Ticket ticket,
struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList attrs,
const char *  nonce_str 
)

Builds an OIDC authorization code including a reclaim ticket and nonce.

Parameters
issuerthe issuer of the ticket, used to sign the ticket and nonce
ticketthe ticket to include in the code
attrslist of attributes to share
noncethe nonce to include in the code
Returns
a new authorization code (caller must free)
Parameters
issuerthe issuer of the ticket, used to sign the ticket and nonce
ticketthe ticket to include in the code
attrslist of attributes whicha re shared
noncethe nonce to include in the code
Returns
a new authorization code (caller must free)

Definition at line 386 of file oidc_helper.c.

References GNUNET_RECLAIM_Ticket::audience, base64_encode(), encrypt_payload(), GNUNET_assert, GNUNET_break, GNUNET_CRYPTO_ecdhe_key_create(), GNUNET_CRYPTO_ecdhe_key_get_public(), GNUNET_CRYPTO_ecdsa_sign(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_free, GNUNET_free_non_null, GNUNET_log, GNUNET_malloc, GNUNET_RECLAIM_ATTRIBUTE_list_serialize(), GNUNET_RECLAIM_ATTRIBUTE_list_serialize_get_size(), GNUNET_SIGNATURE_PURPOSE_RECLAIM_CODE_SIGN, GNUNET_SYSERR, GNUNET_CRYPTO_EccSignaturePurpose::purpose, GNUNET_CRYPTO_EccSignaturePurpose::size, and SSCANF.

Referenced by oidc_ticket_issue_cb().

390 {
391  char *code_payload;
392  char *plaintext;
393  char *attrs_ser;
394  char *code_str;
395  char *buf_ptr;
396  size_t signature_payload_len;
397  size_t attr_list_len;
398  size_t code_payload_len;
399  uint32_t nonce;
400  uint32_t nonce_tmp;
402  struct GNUNET_CRYPTO_EcdhePrivateKey *ecdh_priv;
403  struct GNUNET_CRYPTO_EcdhePublicKey ecdh_pub;
404 
405  attrs_ser = NULL;
406  signature_payload_len =
407  sizeof (struct GNUNET_RECLAIM_Ticket) + sizeof (uint32_t);
408 
409  if (NULL != attrs)
410  {
411  attr_list_len = GNUNET_RECLAIM_ATTRIBUTE_list_serialize_get_size (attrs);
413  "Length of serialized attributes: %lu\n",
414  attr_list_len);
415  signature_payload_len += attr_list_len;
416  attrs_ser = GNUNET_malloc (attr_list_len);
417  GNUNET_RECLAIM_ATTRIBUTE_list_serialize (attrs, attrs_ser);
418  }
419 
420  code_payload_len = sizeof (struct GNUNET_CRYPTO_EccSignaturePurpose) +
421  sizeof (struct GNUNET_CRYPTO_EcdhePublicKey) +
422  signature_payload_len +
423  sizeof (struct GNUNET_CRYPTO_EcdsaSignature);
425  "Length of data to encode: %lu\n",
426  code_payload_len);
427  plaintext = GNUNET_malloc (signature_payload_len);
428  // First, copy ticket
429  buf_ptr = plaintext;
430  memcpy (buf_ptr, ticket, sizeof (struct GNUNET_RECLAIM_Ticket));
431  buf_ptr += sizeof (struct GNUNET_RECLAIM_Ticket);
432 
433  // Then copy nonce
434  nonce = 0;
435  if (NULL != nonce_str && strcmp("", nonce_str) != 0)
436  {
437  if ((1 != SSCANF (nonce_str, "%u", &nonce)) || (nonce > UINT32_MAX))
438  {
439  GNUNET_break (0);
440  GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Invalid nonce %s\n", nonce_str);
441  GNUNET_free (plaintext);
442  GNUNET_free_non_null (attrs_ser);
443  return NULL;
444  }
446  "Got nonce: %u from %s\n",
447  nonce,
448  nonce_str);
449  }
450  nonce_tmp = htonl (nonce);
451  memcpy (buf_ptr, &nonce_tmp, sizeof (uint32_t));
452  buf_ptr += sizeof (uint32_t);
453 
454  // Finally, attributes
455  if (NULL != attrs_ser)
456  {
457  memcpy (buf_ptr, attrs_ser, attr_list_len);
458  GNUNET_free (attrs_ser);
459  }
460  // Generate ECDH key
461  ecdh_priv = GNUNET_CRYPTO_ecdhe_key_create ();
462  GNUNET_CRYPTO_ecdhe_key_get_public (ecdh_priv, &ecdh_pub);
463  // Initialize code payload
464  code_payload = GNUNET_malloc (code_payload_len);
465  GNUNET_assert (NULL != code_payload);
466  purpose = (struct GNUNET_CRYPTO_EccSignaturePurpose *) code_payload;
467  purpose->size = htonl (sizeof (struct GNUNET_CRYPTO_EccSignaturePurpose) +
468  sizeof (ecdh_pub) + signature_payload_len);
470  // Store pubkey
471  buf_ptr = (char *) &purpose[1];
472  memcpy (buf_ptr, &ecdh_pub, sizeof (ecdh_pub));
473  buf_ptr += sizeof (ecdh_pub);
474  // Encrypt plaintext and store
475  encrypt_payload (&ticket->audience,
476  ecdh_priv,
477  plaintext,
478  signature_payload_len,
479  buf_ptr);
480  GNUNET_free (ecdh_priv);
481  GNUNET_free (plaintext);
482  buf_ptr += signature_payload_len;
483  // Sign and store signature
484  if (GNUNET_SYSERR ==
485  GNUNET_CRYPTO_ecdsa_sign (issuer,
486  purpose,
488  buf_ptr))
489  {
490  GNUNET_break (0);
491  GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Unable to sign code\n");
492  GNUNET_free (code_payload);
493  return NULL;
494  }
495  code_str = base64_encode (code_payload, code_payload_len);
496  GNUNET_free (code_payload);
497  return code_str;
498 }
The authorization ticket.
static void encrypt_payload(const struct GNUNET_CRYPTO_EcdsaPublicKey *ecdsa_pub, const struct GNUNET_CRYPTO_EcdhePrivateKey *ecdh_priv, const char *payload, size_t payload_len, char *buf)
Definition: oidc_helper.c:360
uint32_t purpose
What does this signature vouch for? This must contain a GNUNET_SIGNATURE_PURPOSE_XXX constant (from g...
static char * base64_encode(const char *data, size_t data_size)
Returns base64 encoded string urlencoded.
Definition: oidc_helper.c:283
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
struct GNUNET_CRYPTO_EcdhePrivateKey * GNUNET_CRYPTO_ecdhe_key_create(void)
Create a new private key.
Definition: crypto_ecc.c:610
#define GNUNET_free_non_null(ptr)
Free the memory pointed to by ptr if ptr is not NULL.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
header of what an ECC signature signs this must be followed by "size - 8" bytes of the actual signed ...
int 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.
Definition: crypto_ecc.c:931
#define GNUNET_SIGNATURE_PURPOSE_RECLAIM_CODE_SIGN
Signature for a GNUid Ticket.
an ECC signature using ECDSA
uint32_t size
How many bytes does this signature sign? (including this purpose header); in network byte order (!)...
Private ECC key encoded for transmission.
#define GNUNET_SYSERR
Definition: gnunet_common.h:79
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.
Definition: crypto_ecc.c:303
#define SSCANF
Definition: plibc.h:691
struct GNUNET_CRYPTO_EcdsaPublicKey audience
The ticket audience (= relying party)
Public ECC key (always for Curve25519) encoded in a format suitable for network transmission and encr...
#define GNUNET_log(kind,...)
size_t GNUNET_RECLAIM_ATTRIBUTE_list_serialize_get_size(const struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList *attrs)
Get required size for serialization buffer.
size_t GNUNET_RECLAIM_ATTRIBUTE_list_serialize(const struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList *attrs, char *result)
Serialize an attribute list.
#define GNUNET_malloc(size)
Wrapper around malloc.
#define GNUNET_free(ptr)
Wrapper around free.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ OIDC_parse_authz_code()

int OIDC_parse_authz_code ( const struct GNUNET_CRYPTO_EcdsaPrivateKey ecdsa_priv,
const char *  code,
struct GNUNET_RECLAIM_Ticket ticket,
struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList **  attrs,
char **  nonce_str 
)

Parse reclaim ticket and nonce from authorization code.

This also verifies the signature in the code.

Parameters
ecdsa_privthe audience of the ticket
codethe string representation of the code
ticketwhere to store the ticket
attrsthe attributes found in the code
noncewhere to store the nonce
Returns
GNUNET_OK if successful, else GNUNET_SYSERR

This also verifies the signature in the code.

Parameters
audiencethe expected audience of the code
codethe string representation of the code
ticketwhere to store the ticket
attrsthe attributes in the code
noncewhere to store the nonce
Returns
GNUNET_OK if successful, else GNUNET_SYSERR

Definition at line 514 of file oidc_helper.c.

References GNUNET_RECLAIM_Ticket::audience, decrypt_payload(), GNUNET_asprintf(), GNUNET_CRYPTO_ecdsa_key_get_public(), GNUNET_CRYPTO_ecdsa_verify(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_free, GNUNET_free_non_null, GNUNET_log, GNUNET_malloc, GNUNET_memcmp, GNUNET_OK, GNUNET_RECLAIM_ATTRIBUTE_list_deserialize(), GNUNET_RECLAIM_ATTRIBUTE_list_destroy(), GNUNET_SIGNATURE_PURPOSE_RECLAIM_CODE_SIGN, GNUNET_STRINGS_base64_decode(), GNUNET_SYSERR, GNUNET_RECLAIM_Ticket::identity, and GNUNET_CRYPTO_EccSignaturePurpose::purpose.

Referenced by token_endpoint().

519 {
520  char *code_payload;
521  char *ptr;
522  char *plaintext;
524  struct GNUNET_CRYPTO_EcdsaSignature *signature;
525  struct GNUNET_CRYPTO_EcdsaPublicKey ecdsa_pub;
526  struct GNUNET_CRYPTO_EcdhePublicKey *ecdh_pub;
527  size_t code_payload_len;
528  size_t attrs_ser_len;
529  size_t signature_offset;
530  size_t plaintext_len;
531  uint32_t nonce = 0;
532 
533  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Trying to decode `%s'\n", code);
534  code_payload = NULL;
535  code_payload_len =
536  GNUNET_STRINGS_base64_decode (code, strlen (code), (void **) &code_payload);
537  if (code_payload_len < sizeof (struct GNUNET_CRYPTO_EccSignaturePurpose) +
538  sizeof (struct GNUNET_CRYPTO_EcdhePublicKey) +
539  sizeof (struct GNUNET_RECLAIM_Ticket) +
540  sizeof (uint32_t) +
541  sizeof (struct GNUNET_CRYPTO_EcdsaSignature))
542  {
543  GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Authorization code malformed\n");
544  GNUNET_free_non_null (code_payload);
545  return GNUNET_SYSERR;
546  }
547 
548  purpose = (struct GNUNET_CRYPTO_EccSignaturePurpose *) code_payload;
549  attrs_ser_len = code_payload_len;
550  attrs_ser_len -= sizeof (struct GNUNET_CRYPTO_EccSignaturePurpose);
551  ptr = (char *) &purpose[1];
552  // Public ECDH key
553  ecdh_pub = (struct GNUNET_CRYPTO_EcdhePublicKey *) ptr;
554  ptr += sizeof (struct GNUNET_CRYPTO_EcdhePublicKey);
555  attrs_ser_len -= sizeof (struct GNUNET_CRYPTO_EcdhePublicKey);
556 
557  // Decrypt ciphertext
558  plaintext_len = attrs_ser_len - sizeof (struct GNUNET_CRYPTO_EcdsaSignature);
559  plaintext = GNUNET_malloc (plaintext_len);
560  decrypt_payload (ecdsa_priv, ecdh_pub, ptr, plaintext_len, plaintext);
561  ptr = plaintext;
562  // Ticket
563  *ticket = *((struct GNUNET_RECLAIM_Ticket *) ptr);
564  attrs_ser_len -= sizeof (struct GNUNET_RECLAIM_Ticket);
565  ptr += sizeof (struct GNUNET_RECLAIM_Ticket);
566  // Nonce
567  nonce = ntohl (*((uint32_t *) ptr));
568  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Got nonce: %u\n", nonce);
569  attrs_ser_len -= sizeof (uint32_t);
570  ptr += sizeof (uint32_t);
571  // Attributes
572  attrs_ser_len -= sizeof (struct GNUNET_CRYPTO_EcdsaSignature);
573  *attrs = GNUNET_RECLAIM_ATTRIBUTE_list_deserialize (ptr, attrs_ser_len);
574  // Signature
575  signature_offset =
576  code_payload_len - sizeof (struct GNUNET_CRYPTO_EcdsaSignature);
577  signature =
578  (struct GNUNET_CRYPTO_EcdsaSignature *) &code_payload[signature_offset];
579  GNUNET_CRYPTO_ecdsa_key_get_public (ecdsa_priv, &ecdsa_pub);
580  if (0 != GNUNET_memcmp (&ecdsa_pub, &ticket->audience))
581  {
583  GNUNET_free (code_payload);
584  GNUNET_free (plaintext);
586  "Audience in ticket does not match client!\n");
587  return GNUNET_SYSERR;
588  }
589  if (GNUNET_OK !=
591  purpose,
592  signature,
593  &ticket->identity))
594  {
596  GNUNET_free (code_payload);
597  GNUNET_free (plaintext);
598  GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Signature of AuthZ code invalid!\n");
599  return GNUNET_SYSERR;
600  }
601  *nonce_str = NULL;
602  if (nonce != 0)
603  GNUNET_asprintf (nonce_str, "%u", nonce);
604  GNUNET_free (code_payload);
605  GNUNET_free (plaintext);
606  return GNUNET_OK;
607 }
The authorization ticket.
int 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.
Definition: crypto_ecc.c:1048
uint32_t purpose
What does this signature vouch for? This must contain a GNUNET_SIGNATURE_PURPOSE_XXX constant (from g...
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:78
#define GNUNET_free_non_null(ptr)
Free the memory pointed to by ptr if ptr is not NULL.
static void decrypt_payload(const struct GNUNET_CRYPTO_EcdsaPrivateKey *ecdsa_priv, const struct GNUNET_CRYPTO_EcdhePublicKey *ecdh_pub, const char *ct, size_t ct_len, char *buf)
Definition: oidc_helper.c:345
header of what an ECC signature signs this must be followed by "size - 8" bytes of the actual signed ...
void GNUNET_RECLAIM_ATTRIBUTE_list_destroy(struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList *attrs)
Destroy claim list.
int GNUNET_asprintf(char **buf, const char *format,...)
Like asprintf, just portable.
#define GNUNET_SIGNATURE_PURPOSE_RECLAIM_CODE_SIGN
Signature for a GNUid Ticket.
an ECC signature using ECDSA
size_t GNUNET_STRINGS_base64_decode(const char *data, size_t len, void **output)
Decode from Base64.
Definition: strings.c:2067
struct GNUNET_CRYPTO_EcdsaPublicKey identity
The ticket issuer (= the user)
#define GNUNET_SYSERR
Definition: gnunet_common.h:79
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.
Definition: crypto_ecc.c:241
#define GNUNET_memcmp(a, b)
Compare memory in a and b, where both must be of the same pointer type.
struct GNUNET_CRYPTO_EcdsaPublicKey audience
The ticket audience (= relying party)
Public ECC key (always for Curve25519) encoded in a format suitable for network transmission and ECDS...
Public ECC key (always for Curve25519) encoded in a format suitable for network transmission and encr...
#define GNUNET_log(kind,...)
struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList * GNUNET_RECLAIM_ATTRIBUTE_list_deserialize(const char *data, size_t data_size)
Deserialize an attribute list.
#define GNUNET_malloc(size)
Wrapper around malloc.
#define GNUNET_free(ptr)
Wrapper around free.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ OIDC_build_token_response()

void OIDC_build_token_response ( const char *  access_token,
const char *  id_token,
const struct GNUNET_TIME_Relative expiration_time,
char **  token_response 
)

Build a token response for a token request TODO: Maybe we should add the scope here?

Parameters
access_tokenthe access token to include
id_tokenthe id_token to include
expiration_timethe expiration time of the token(s)
token_responsewhere to store the response

Definition at line 620 of file oidc_helper.c.

References GNUNET_assert, and GNUNET_TIME_Relative::rel_value_us.

Referenced by token_endpoint().

624 {
625  json_t *root_json;
626 
627  root_json = json_object ();
628 
629  GNUNET_assert (NULL != access_token);
630  GNUNET_assert (NULL != id_token);
631  GNUNET_assert (NULL != expiration_time);
632  json_object_set_new (root_json, "access_token", json_string (access_token));
633  json_object_set_new (root_json, "token_type", json_string ("Bearer"));
634  json_object_set_new (root_json,
635  "expires_in",
636  json_integer (expiration_time->rel_value_us /
637  (1000 * 1000)));
638  json_object_set_new (root_json, "id_token", json_string (id_token));
639  *token_response = json_dumps (root_json, JSON_INDENT (0) | JSON_COMPACT);
640  json_decref (root_json);
641 }
uint64_t rel_value_us
The actual value.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
Here is the caller graph for this function:

◆ OIDC_access_token_new()

char* OIDC_access_token_new ( )

Generate a new access token.

Definition at line 647 of file oidc_helper.c.

References GNUNET_CRYPTO_QUALITY_NONCE, GNUNET_CRYPTO_random_u64(), and GNUNET_STRINGS_base64_encode().

Referenced by token_endpoint().

648 {
649  char *access_token;
650  uint64_t random_number;
651 
652  random_number =
654  GNUNET_STRINGS_base64_encode (&random_number,
655  sizeof (uint64_t),
656  &access_token);
657  return access_token;
658 }
uint64_t GNUNET_CRYPTO_random_u64(enum GNUNET_CRYPTO_Quality mode, uint64_t max)
Random on unsigned 64-bit values.
Randomness for IVs etc.
size_t GNUNET_STRINGS_base64_encode(const void *in, size_t len, char **output)
Encode into Base64.
Definition: strings.c:2004
Here is the call graph for this function:
Here is the caller graph for this function: