Package M2Crypto :: Module DSA :: Class DSA_pub

Class DSA_pub

This class is a DSA context that only supports a public key and verification. It does NOT support a private key or signing.

Instance Methods

tuple

sign(self, *argv)
Sign the digest.

tuple

sign_asn1(self, *argv)
Sign the digest.

int

check_key(self)
Check to be sure the DSA object has a valid private key.

save_key(self, filename)
Save the DSA public key (with parameters) to a file.

save_key_bio(self, bio)
Save DSA public key (with parameters) to a BIO object.

Inherited from DSA: __del__, __getattr__, __init__, __len__, __setattr__, gen_key, m2_dsa_free, save_params, save_params_bio, save_pub_key, save_pub_key_bio, set_params, verify, verify_asn1

Method Details

Sign the digest.

Parameters:

digest - SHA-1 hash of message (same as output from MessageDigest, a "byte string")

Returns: tuple

DSA signature, a tuple of two values, r and s, both "byte strings".

Overrides: DSA.sign

(inherited documentation)

Sign the digest.

Parameters:

digest - SHA-1 hash of message (same as output from MessageDigest, a "byte string")

Returns: tuple

DSA signature, a tuple of two values, r and s, both "byte strings".

Check to be sure the DSA object has a valid private key.

Save the DSA public key (with parameters) to a file.

Parameters:

Returns:

1 (true) if successful

Save DSA public key (with parameters) to a BIO object.

Parameters:

bio (M2Crypto.BIO object) - Save DSA public key (with parameters) to this object.

Returns:

1 (true) if successful