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author | Kenny Root <kenny@the-b.org> | 2015-07-18 11:30:18 -0700 |
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committer | Kenny Root <kenny@the-b.org> | 2015-07-18 11:30:18 -0700 |
commit | 2f5f3754dce85212a71138fd80c2300b73461908 (patch) | |
tree | ac51a1c9f143bc77a0cfec2e7da1b7c184394a98 /sshlib/src/main/java/com/trilead/ssh2/crypto/digest/HashForSSH2Types.java | |
parent | 0cf7ac30faecc82e04b080f418b08758624b07f5 (diff) | |
download | sshlib-2f5f3754dce85212a71138fd80c2300b73461908.tar.gz sshlib-2f5f3754dce85212a71138fd80c2300b73461908.tar.bz2 sshlib-2f5f3754dce85212a71138fd80c2300b73461908.zip |
Rename project to sshlib
Diffstat (limited to 'sshlib/src/main/java/com/trilead/ssh2/crypto/digest/HashForSSH2Types.java')
-rw-r--r-- | sshlib/src/main/java/com/trilead/ssh2/crypto/digest/HashForSSH2Types.java | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/sshlib/src/main/java/com/trilead/ssh2/crypto/digest/HashForSSH2Types.java b/sshlib/src/main/java/com/trilead/ssh2/crypto/digest/HashForSSH2Types.java new file mode 100644 index 0000000..6b0d6e3 --- /dev/null +++ b/sshlib/src/main/java/com/trilead/ssh2/crypto/digest/HashForSSH2Types.java @@ -0,0 +1,91 @@ + +package com.trilead.ssh2.crypto.digest; + +import java.math.BigInteger; +import java.security.DigestException; +import java.security.MessageDigest; +import java.security.NoSuchAlgorithmException; + +/** + * HashForSSH2Types. + * + * @author Christian Plattner, plattner@trilead.com + * @version $Id: HashForSSH2Types.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $ + */ +public class HashForSSH2Types +{ + MessageDigest md; + + public HashForSSH2Types(String type) + { + try { + md = MessageDigest.getInstance(type); + } catch (NoSuchAlgorithmException e) { + throw new RuntimeException("Unsupported algorithm " + type); + } + } + + public void updateByte(byte b) + { + /* HACK - to test it with J2ME */ + byte[] tmp = new byte[1]; + tmp[0] = b; + md.update(tmp); + } + + public void updateBytes(byte[] b) + { + md.update(b); + } + + public void updateUINT32(int v) + { + md.update((byte) (v >> 24)); + md.update((byte) (v >> 16)); + md.update((byte) (v >> 8)); + md.update((byte) (v)); + } + + public void updateByteString(byte[] b) + { + updateUINT32(b.length); + updateBytes(b); + } + + public void updateBigInt(BigInteger b) + { + updateByteString(b.toByteArray()); + } + + public void reset() + { + md.reset(); + } + + public int getDigestLength() + { + return md.getDigestLength(); + } + + public byte[] getDigest() + { + byte[] tmp = new byte[md.getDigestLength()]; + getDigest(tmp); + return tmp; + } + + public void getDigest(byte[] out) + { + getDigest(out, 0); + } + + public void getDigest(byte[] out, int off) + { + try { + md.digest(out, off, out.length - off); + } catch (DigestException e) { + // TODO is this right?! + throw new RuntimeException("Unable to digest", e); + } + } +} |