implementing TALER_refresh_link_encrypted_encode, and adding test
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@ -544,6 +544,17 @@ TALER_refresh_link_encrypted_decode (const char *buf,
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size_t buf_len);
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size_t buf_len);
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/* FIXME: should also have _encode API... */
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/**
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* Encode encrypted refresh link information to buffer.
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*
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* @param rle refresh link to encode
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* @param[out] buf_len set number of bytes returned
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* @return NULL on error, otherwise buffer with encoded @a rle
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*/
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char *
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TALER_refresh_link_encrypted_encode (const struct TALER_RefreshLinkEncrypted *rle,
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size_t *buf_len);
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#endif
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#endif
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@ -292,6 +292,11 @@ TALER_refresh_link_encrypted_decode (const char *buf,
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if (buf_len < sizeof (struct GNUNET_CRYPTO_EcdsaPrivateKey))
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if (buf_len < sizeof (struct GNUNET_CRYPTO_EcdsaPrivateKey))
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return NULL;
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return NULL;
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if (buf_len >= GNUNET_MAX_MALLOC_CHECKED)
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{
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GNUNET_break (0);
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return NULL;
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}
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rle = GNUNET_malloc (sizeof (struct TALER_RefreshLinkEncrypted) +
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rle = GNUNET_malloc (sizeof (struct TALER_RefreshLinkEncrypted) +
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buf_len - sizeof (struct GNUNET_CRYPTO_EcdsaPrivateKey));
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buf_len - sizeof (struct GNUNET_CRYPTO_EcdsaPrivateKey));
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rle->blinding_key_enc = (const char *) &rle[1];
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rle->blinding_key_enc = (const char *) &rle[1];
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@ -303,6 +308,33 @@ TALER_refresh_link_encrypted_decode (const char *buf,
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}
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}
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/**
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* Encode encrypted refresh link information to buffer.
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*
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* @param rle refresh link to encode
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* @param[out] buf_len set number of bytes returned
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* @return NULL on error, otherwise buffer with encoded @a rle
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*/
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char *
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TALER_refresh_link_encrypted_encode (const struct TALER_RefreshLinkEncrypted *rle,
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size_t *buf_len)
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{
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char *buf;
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if (rle->blinding_key_enc_size >= GNUNET_MAX_MALLOC_CHECKED - sizeof (struct GNUNET_CRYPTO_EcdsaPrivateKey))
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{
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GNUNET_break (0);
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return NULL;
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}
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*buf_len = sizeof (struct GNUNET_CRYPTO_EcdsaPrivateKey) + rle->blinding_key_enc_size;
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buf = GNUNET_malloc (*buf_len);
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memcpy (buf,
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rle->coin_priv_enc,
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*buf_len);
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return buf;
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}
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/**
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/**
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* Check if a coin is valid; that is, whether the denomination key exists,
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* Check if a coin is valid; that is, whether the denomination key exists,
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* is not expired, and the signature is correct.
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* is not expired, and the signature is correct.
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@ -24,6 +24,11 @@
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#include "taler_crypto_lib.h"
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#include "taler_crypto_lib.h"
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/**
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* Test low-level link encryption/decryption APIs.
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*
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* @return 0 on success
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*/
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static int
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static int
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test_basics ()
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test_basics ()
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{
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{
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@ -77,6 +82,42 @@ test_basics ()
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}
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}
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/**
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* Test #TALER_refresh_link_encrypted_decode().
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*
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* @return 0 on success
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*/
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static int
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test_rled ()
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{
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struct TALER_RefreshLinkEncrypted *rle;
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char buf[512];
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char *buf2;
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size_t buf_len = sizeof (buf);
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memset (buf, 42, sizeof (buf));
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rle = TALER_refresh_link_encrypted_decode (buf,
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buf_len);
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GNUNET_assert (NULL != rle);
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buf_len = 42;
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buf2 = TALER_refresh_link_encrypted_encode (rle,
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&buf_len);
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GNUNET_assert (NULL != buf2);
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GNUNET_assert (buf_len == sizeof (buf));
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GNUNET_assert (0 == memcmp (buf,
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buf2,
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buf_len));
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GNUNET_free (rle);
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GNUNET_free (buf2);
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return 0;
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}
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/**
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* Test high-level link encryption/decryption API.
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*
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* @return 0 on success
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*/
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static int
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static int
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test_high_level ()
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test_high_level ()
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{
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{
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@ -131,6 +172,8 @@ main(int argc,
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{
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{
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if (0 != test_basics ())
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if (0 != test_basics ())
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return 1;
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return 1;
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if (0 != test_rled ())
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return 1;
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if (0 != test_high_level ())
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if (0 != test_high_level ())
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return 1;
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return 1;
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return 0;
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return 0;
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