commit dcf69a9e12d013563575e50b7d6f547832f92f66 Author: Nick Mathewson nickm@torproject.org Date: Tue Sep 13 14:32:51 2011 -0400

New function to get all digests of a public key --- src/common/crypto.c | 26 ++++++++++++++++++++++++++ src/common/crypto.h | 1 + 2 files changed, 27 insertions(+), 0 deletions(-)

diff --git a/src/common/crypto.c b/src/common/crypto.c index 9ad7575..edb0d42 100644 --- a/src/common/crypto.c +++ b/src/common/crypto.c @@ -1249,6 +1249,32 @@ crypto_pk_get_digest(crypto_pk_env_t *pk, char *digest_out) return 0; }

+/** Compute all digests of the DER encoding of <b>pk</b>, and store them + * in <b>digests_out</b>. Return 0 on success, -1 on failure. */ +int +crypto_pk_get_all_digests(crypto_pk_env_t *pk, digests_t *digests_out) +{ + unsigned char *buf, *bufp; + int len; + + len = i2d_RSAPublicKey(pk->key, NULL); + if (len < 0) + return -1; + buf = bufp = tor_malloc(len+1); + len = i2d_RSAPublicKey(pk->key, &bufp); + if (len < 0) { + crypto_log_errors(LOG_WARN,"encoding public key"); + tor_free(buf); + return -1; + } + if (crypto_digest_all(digests_out, (char*)buf, len) < 0) { + tor_free(buf); + return -1; + } + tor_free(buf); + return 0; +} + /** Copy <b>in</b> to the <b>outlen</b>-byte buffer <b>out</b>, adding spaces * every four spaces. */ /* static */ void diff --git a/src/common/crypto.h b/src/common/crypto.h index 9b4eee6..d50d9f9 100644 --- a/src/common/crypto.h +++ b/src/common/crypto.h @@ -150,6 +150,7 @@ int crypto_pk_private_hybrid_decrypt(crypto_pk_env_t *env, char *to, int crypto_pk_asn1_encode(crypto_pk_env_t *pk, char *dest, size_t dest_len); crypto_pk_env_t *crypto_pk_asn1_decode(const char *str, size_t len); int crypto_pk_get_digest(crypto_pk_env_t *pk, char *digest_out); +int crypto_pk_get_all_digests(crypto_pk_env_t *pk, digests_t *digests_out); int crypto_pk_get_fingerprint(crypto_pk_env_t *pk, char *fp_out,int add_space); int crypto_pk_check_fingerprint_syntax(const char *s);