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OpenSSL: Implement aes_wrap() and aes_unwrap()

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This replaces the implementation in aes-wrap.c and aes-unwrap.c with
OpenSSL AES_wrap_key() and AES_unwrap_key() functions when building
hostapd or wpa_supplicant with OpenSSL.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2015-01-27 13:57:59 +02:00 • committed by Jouni Malinen
parent fee31f76cd
commit f19c907822
5 changed files with 43 additions and 0 deletions
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27
src/crypto/crypto_openssl.c
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@ -297,6 +297,33 @@ void aes_decrypt_deinit(void *ctx)
}
int aes_wrap(const u8 *kek, size_t kek_len, int n, const u8 *plain, u8 *cipher)
{
AES_KEY actx;
int res;
if (AES_set_encrypt_key(kek, kek_len << 3, &actx))
return -1;
res = AES_wrap_key(&actx, NULL, cipher, plain, n * 8);
OPENSSL_cleanse(&actx, sizeof(actx));
return res <= 0 ? -1 : 0;
}
int aes_unwrap(const u8 *kek, size_t kek_len, int n, const u8 *cipher,
u8 *plain)
{
AES_KEY actx;
int res;
if (AES_set_decrypt_key(kek, kek_len << 3, &actx))
return -1;
res = AES_unwrap_key(&actx, NULL, plain, cipher, (n + 1) * 8);
OPENSSL_cleanse(&actx, sizeof(actx));
return res <= 0 ? -1 : 0;
}
int crypto_mod_exp(const u8 *base, size_t base_len,
const u8 *power, size_t power_len,
const u8 *modulus, size_t modulus_len,