james/yubikey.rs
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fix PSS signing support

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This commit is contained in:
Hannes Mehnert
2017-03-26 19:13:07 +02:00
parent 8e91c8ea2f
commit 847b0b4267
4 changed files with 28 additions and 21 deletions
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ykcs11/openssl_utils.c
+5 -7
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@@ -557,16 +557,13 @@ CK_RV do_pkcs_1_digest_info(CK_BYTE_PTR in, CK_ULONG in_len, int nid, CK_BYTE_PT
CK_RV do_pkcs_pss(RSA *key, CK_BYTE_PTR in, CK_ULONG in_len, int nid,
CK_BYTE_PTR out, CK_ULONG_PTR out_len) {
unsigned char em[512]; // Max for this is ceil((|key_len_bits| - 1) / 8)
unsigned char em[RSA_size(key)];
OpenSSL_add_all_digests();
DBG("Apply PSS padding to %lu bytes and get %d", in_len, RSA_size(key));
// TODO: rand must be seeded first (should be automatic)
if (*out_len < (CK_ULONG)RSA_size(key))
return CKR_BUFFER_TOO_SMALL;
DBG("Apply PSS padding to %lu bytes and get %d\n", in_len, RSA_size(key));
if (out != in)
memcpy(out, in, in_len);
@@ -576,7 +573,8 @@ CK_RV do_pkcs_pss(RSA *key, CK_BYTE_PTR in, CK_ULONG in_len, int nid,
return CKR_FUNCTION_FAILED;
}
*out_len = (CK_ULONG) RSA_size(key);
memcpy(out, em, sizeof(em));
*out_len = (CK_ULONG) sizeof(em);
EVP_cleanup();