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| author | Andreas Schultz <[email protected]> | 2012-05-31 13:08:16 +0200 |
|---|---|---|
| committer | Ingela Anderton Andin <[email protected]> | 2012-08-22 14:00:42 +0200 |
| commit | 95b2d97ecfeb4f1f254e4b7c16ea2ec8b4698dd0 (patch) | |
| tree | d5047c1ec3c547617c7335418803488466601bc2 | |
| parent | 90167202a4ce3dc6d4822fad04c51cc35913d796 (diff) | |
| download | otp-95b2d97ecfeb4f1f254e4b7c16ea2ec8b4698dd0.tar.gz otp-95b2d97ecfeb4f1f254e4b7c16ea2ec8b4698dd0.tar.bz2 otp-95b2d97ecfeb4f1f254e4b7c16ea2ec8b4698dd0.zip | |
public_key: Add rsa and dss hash signing support
| -rw-r--r-- | lib/public_key/src/public_key.erl | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/lib/public_key/src/public_key.erl b/lib/public_key/src/public_key.erl index 9f1a0b3af5..1c5c6d1d2e 100644 --- a/lib/public_key/src/public_key.erl +++ b/lib/public_key/src/public_key.erl @@ -34,6 +34,7 @@ decrypt_private/2, decrypt_private/3, encrypt_public/2, encrypt_public/3, decrypt_public/2, decrypt_public/3, + sign_hash/3, verify_hash/4, sign/3, verify/4, pkix_sign/2, pkix_verify/2, pkix_is_self_signed/1, @@ -332,6 +333,25 @@ format_rsa_private_key(#'RSAPrivateKey'{modulus = N, publicExponent = E, [crypto:mpint(K) || K <- [E, N, D]]. %%-------------------------------------------------------------------- +-spec sign_hash(PlainTextOrDigest :: binary(), rsa_digest_type() | dss_digest_type(), + rsa_private_key() | + dsa_private_key()) -> Signature :: binary(). +%% +%% Description: Create a PKCS digital signature. +%%-------------------------------------------------------------------- +sign_hash(Hash, DigestType, #'RSAPrivateKey'{modulus = N, publicExponent = E, + privateExponent = D}) + when is_binary(Hash) -> + crypto:rsa_sign_hash(DigestType, Hash, [crypto:mpint(E), + crypto:mpint(N), + crypto:mpint(D)]); +sign_hash(Hash, DigestType, #'DSAPrivateKey'{p = P, q = Q, g = G, x = X}) + when is_binary(Hash)-> + crypto:dss_sign_hash(DigestType, Hash, + [crypto:mpint(P), crypto:mpint(Q), + crypto:mpint(G), crypto:mpint(X)]). + +%%-------------------------------------------------------------------- -spec sign(PlainTextOrDigest :: binary(), rsa_digest_type() | dss_digest_type(), rsa_private_key() | dsa_private_key()) -> Signature :: binary(). @@ -359,6 +379,23 @@ sign(PlainText, sha, #'DSAPrivateKey'{p = P, q = Q, g = G, x = X}) crypto:mpint(G), crypto:mpint(X)]). %%-------------------------------------------------------------------- +-spec verify_hash(PlainTextOrDigest :: binary(), rsa_digest_type() | dss_digest_type(), + Signature :: binary(), rsa_public_key() + | dsa_public_key()) -> boolean(). +%% +%% Description: Verifies a PKCS digital signature. +%%-------------------------------------------------------------------- +verify_hash(Hash, DigestType, Signature, + #'RSAPublicKey'{modulus = Mod, publicExponent = Exp}) + when is_binary (Hash) and (DigestType == sha orelse + DigestType == sha256 orelse + DigestType == sha512 orelse + DigestType == md5) -> + crypto:rsa_verify_hash(DigestType, Hash, + sized_binary(Signature), + [crypto:mpint(Exp), crypto:mpint(Mod)]). + +%%-------------------------------------------------------------------- -spec verify(PlainTextOrDigest :: binary(), rsa_digest_type() | dss_digest_type(), Signature :: binary(), rsa_public_key() | dsa_public_key()) -> boolean(). |