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author | Roberto Tyley <roberto.tyley@gmail.com> | 2014-07-15 01:38:01 +0400 |
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committer | Roberto Tyley <roberto.tyley@gmail.com> | 2014-07-26 11:23:17 +0400 |
commit | 7cb752aaf746dc0b473afeb9e892b7fbc12666c5 (patch) | |
tree | cc4f91ddc18332b5adbe82e3fcb040d976c90105 /core/src/main/java/org/spongycastle/crypto/DSA.java | |
parent | 551830f8ea5177042af2c7dd1fc90888bc67387d (diff) |
Execute become-spongy.sh
https://github.com/rtyley/spongycastle/blob/3040af/become-spongy.sh
Diffstat (limited to 'core/src/main/java/org/spongycastle/crypto/DSA.java')
-rw-r--r-- | core/src/main/java/org/spongycastle/crypto/DSA.java | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/core/src/main/java/org/spongycastle/crypto/DSA.java b/core/src/main/java/org/spongycastle/crypto/DSA.java new file mode 100644 index 00000000..7243ddd9 --- /dev/null +++ b/core/src/main/java/org/spongycastle/crypto/DSA.java @@ -0,0 +1,36 @@ +package org.spongycastle.crypto; + +import java.math.BigInteger; + +/** + * interface for classes implementing algorithms modeled similar to the Digital Signature Alorithm. + */ +public interface DSA +{ + /** + * initialise the signer for signature generation or signature + * verification. + * + * @param forSigning true if we are generating a signature, false + * otherwise. + * @param param key parameters for signature generation. + */ + public void init(boolean forSigning, CipherParameters param); + + /** + * sign the passed in message (usually the output of a hash function). + * + * @param message the message to be signed. + * @return two big integers representing the r and s values respectively. + */ + public BigInteger[] generateSignature(byte[] message); + + /** + * verify the message message against the signature values r and s. + * + * @param message the message that was supposed to have been signed. + * @param r the r signature value. + * @param s the s signature value. + */ + public boolean verifySignature(byte[] message, BigInteger r, BigInteger s); +} |