commit d2629f78a000486f8f994ba0ab75ceeaee67fc55 Author: Robert Ransom rransom.8774@gmail.com Date: Thu Apr 28 12:13:03 2011 -0700

Add crypto_pk_check_key_public_exponent function --- src/common/crypto.c | 12 ++++++++++++ src/common/crypto.h | 1 + 2 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/src/common/crypto.c b/src/common/crypto.c index f3268fe..6761fd7 100644 --- a/src/common/crypto.c +++ b/src/common/crypto.c @@ -656,6 +656,18 @@ crypto_pk_key_is_private(const crypto_pk_env_t *key) return PRIVATE_KEY_OK(key); }

+/** Return true iff <b>env</b> contains a public key whose public exponent + * equals 65537. + */ +int +crypto_pk_check_key_public_exponent(crypto_pk_env_t *env) +{ + tor_assert(env); + tor_assert(env->key); + + return BN_is_word(env->key->e, 65537); +} + /** Compare the public-key components of a and b. Return -1 if a<b, 0 * if a==b, and 1 if a>b. */ diff --git a/src/common/crypto.h b/src/common/crypto.h index 576c03d..0fcd067 100644 --- a/src/common/crypto.h +++ b/src/common/crypto.h @@ -92,6 +92,7 @@ size_t crypto_pk_keysize(crypto_pk_env_t *env); crypto_pk_env_t *crypto_pk_dup_key(crypto_pk_env_t *orig); crypto_pk_env_t *crypto_pk_copy_full(crypto_pk_env_t *orig); int crypto_pk_key_is_private(const crypto_pk_env_t *key); +int crypto_pk_check_key_public_exponent(crypto_pk_env_t *env);

int crypto_pk_public_encrypt(crypto_pk_env_t *env, char *to, size_t tolen, const char *from, size_t fromlen, int padding);