diff options
| author | Christian Grothoff <christian@grothoff.org> | 2015-04-18 13:08:19 +0200 |
|---|---|---|
| committer | Christian Grothoff <christian@grothoff.org> | 2015-04-18 13:08:19 +0200 |
| commit | e226e5c350a84ff2a04ed183e5bde4fae6d11489 (patch) | |
| tree | ad71d7a92fc04bf03e51665b595da1a9f994d21e /src/util/crypto.c | |
| parent | e61b83495e1a20e3661cd31fbd9d71899f6a2380 (diff) | |
implementing TALER_refresh_link_encrypted_encode, and adding test
Diffstat (limited to 'src/util/crypto.c')
| -rw-r--r-- | src/util/crypto.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/util/crypto.c b/src/util/crypto.c index 14c14ebce..a00783701 100644 --- a/src/util/crypto.c +++ b/src/util/crypto.c @@ -292,6 +292,11 @@ TALER_refresh_link_encrypted_decode (const char *buf, if (buf_len < sizeof (struct GNUNET_CRYPTO_EcdsaPrivateKey)) return NULL; + if (buf_len >= GNUNET_MAX_MALLOC_CHECKED) + { + GNUNET_break (0); + return NULL; + } rle = GNUNET_malloc (sizeof (struct TALER_RefreshLinkEncrypted) + buf_len - sizeof (struct GNUNET_CRYPTO_EcdsaPrivateKey)); rle->blinding_key_enc = (const char *) &rle[1]; @@ -304,6 +309,33 @@ TALER_refresh_link_encrypted_decode (const char *buf, /** + * Encode encrypted refresh link information to buffer. + * + * @param rle refresh link to encode + * @param[out] buf_len set number of bytes returned + * @return NULL on error, otherwise buffer with encoded @a rle + */ +char * +TALER_refresh_link_encrypted_encode (const struct TALER_RefreshLinkEncrypted *rle, + size_t *buf_len) +{ + char *buf; + + if (rle->blinding_key_enc_size >= GNUNET_MAX_MALLOC_CHECKED - sizeof (struct GNUNET_CRYPTO_EcdsaPrivateKey)) + { + GNUNET_break (0); + return NULL; + } + *buf_len = sizeof (struct GNUNET_CRYPTO_EcdsaPrivateKey) + rle->blinding_key_enc_size; + buf = GNUNET_malloc (*buf_len); + memcpy (buf, + rle->coin_priv_enc, + *buf_len); + return buf; +} + + +/** * Check if a coin is valid; that is, whether the denomination key exists, * is not expired, and the signature is correct. * |