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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 /lib/src/main/java/com/trilead/ssh2/crypto/digest/MAC.java | |
parent | 0cf7ac30faecc82e04b080f418b08758624b07f5 (diff) | |
download | sshlib-2f5f3754dce85212a71138fd80c2300b73461908.tar.gz sshlib-2f5f3754dce85212a71138fd80c2300b73461908.tar.bz2 sshlib-2f5f3754dce85212a71138fd80c2300b73461908.zip |
Rename project to sshlib
Diffstat (limited to 'lib/src/main/java/com/trilead/ssh2/crypto/digest/MAC.java')
-rw-r--r-- | lib/src/main/java/com/trilead/ssh2/crypto/digest/MAC.java | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/digest/MAC.java b/lib/src/main/java/com/trilead/ssh2/crypto/digest/MAC.java deleted file mode 100644 index 561599c..0000000 --- a/lib/src/main/java/com/trilead/ssh2/crypto/digest/MAC.java +++ /dev/null @@ -1,157 +0,0 @@ - -package com.trilead.ssh2.crypto.digest; - -import java.security.InvalidKeyException; -import java.security.NoSuchAlgorithmException; - -import javax.crypto.Mac; -import javax.crypto.ShortBufferException; -import javax.crypto.spec.SecretKeySpec; - -/** - * MAC. - * - * @author Christian Plattner, plattner@trilead.com - * @version $Id: MAC.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $ - */ -public final class MAC -{ - /** - * From http://tools.ietf.org/html/rfc4253 - */ - private static final String HMAC_MD5 = "hmac-md5"; - - /** - * From http://tools.ietf.org/html/rfc4253 - */ - private static final String HMAC_MD5_96 = "hmac-md5-96"; - - /** - * From http://tools.ietf.org/html/rfc4253 - */ - private static final String HMAC_SHA1 = "hmac-sha1"; - - /** - * From http://tools.ietf.org/html/rfc4253 - */ - private static final String HMAC_SHA1_96 = "hmac-sha1-96"; - - /** - * From http://tools.ietf.org/html/rfc6668 - */ - private static final String HMAC_SHA2_256 = "hmac-sha2-256"; - - /** - * From http://tools.ietf.org/html/rfc6668 - */ - private static final String HMAC_SHA2_512 = "hmac-sha2-512"; - - Mac mac; - int outSize; - int macSize; - byte[] buffer; - - /* Higher Priority First */ - private static final String[] MAC_LIST = { - HMAC_SHA2_256, HMAC_SHA2_512, - HMAC_SHA1_96, HMAC_SHA1, HMAC_MD5_96, HMAC_MD5 - }; - - public final static String[] getMacList() - { - return MAC_LIST; - } - - public final static void checkMacList(String[] macs) - { - for (int i = 0; i < macs.length; i++) - getKeyLen(macs[i]); - } - - public final static int getKeyLen(String type) - { - if (HMAC_SHA1.equals(type) || HMAC_SHA1_96.equals(type)) - return 20; - if (HMAC_MD5.equals(type) || HMAC_MD5_96.equals(type)) - return 16; - if (HMAC_SHA2_256.equals(type)) - return 32; - if (HMAC_SHA2_512.equals(type)) - return 64; - throw new IllegalArgumentException("Unkown algorithm " + type); - } - - public MAC(String type, byte[] key) - { - try { - if (HMAC_SHA1.equals(type) || HMAC_SHA1_96.equals(type)) - { - mac = Mac.getInstance("HmacSHA1"); - } - else if (HMAC_MD5.equals(type) || HMAC_MD5_96.equals(type)) - { - mac = Mac.getInstance("HmacMD5"); - } - else if (HMAC_SHA2_256.equals(type)) - { - mac = Mac.getInstance("HmacSHA256"); - } - else if (HMAC_SHA2_512.equals(type)) - { - mac = Mac.getInstance("HmacSHA512"); - } - else - throw new IllegalArgumentException("Unkown algorithm " + type); - } catch (NoSuchAlgorithmException e) { - throw new IllegalArgumentException("Unknown algorithm " + type, e); - } - - macSize = mac.getMacLength(); - if (type.endsWith("-96")) { - outSize = 12; - buffer = new byte[macSize]; - } else { - outSize = macSize; - buffer = null; - } - - try { - mac.init(new SecretKeySpec(key, type)); - } catch (InvalidKeyException e) { - throw new IllegalArgumentException(e); - } - } - - public final void initMac(int seq) - { - mac.reset(); - mac.update((byte) (seq >> 24)); - mac.update((byte) (seq >> 16)); - mac.update((byte) (seq >> 8)); - mac.update((byte) (seq)); - } - - public final void update(byte[] packetdata, int off, int len) - { - mac.update(packetdata, off, len); - } - - public final void getMac(byte[] out, int off) - { - try { - if (buffer != null) { - mac.doFinal(buffer, 0); - System.arraycopy(buffer, 0, out, off, out.length - off); - } else { - mac.doFinal(out, off); - } - } catch (ShortBufferException e) { - throw new IllegalStateException(e); - } - } - - public final int size() - { - return outSize; - } -} |