vadimonus/plsql-hash

SHA-1/SHA-256 PL/SQL Implementation

SHA-1 / SHA-2 PL/SQL library

Descritpion

This package allows to calculate SHA-1 and SHA-2 hashes. It's written in pure PL/SQL and does not require access to DBMS_CRYPTO and external Java functions.

Author

This library is written by Vadim Dvorovenko [email protected].

License

The MIT License (MIT)

Copyright (c) 2014-2016 Vadim Dvorovenko

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Limitations

For RAW versions of functions, hash cannot be calculated for data larger than 16384 bytes. For larger data you can use BLOB versions.

Currently all calculations are performed using NUMBER datatype, code is very inefficent.

Examples

BEGIN
  DBMS_OUTPUT.PUT_LINE(RAWTOHEX(HASH_UTIL_PKG.SHA1(UTL_RAW.CAST_TO_RAW(''))));
  DBMS_OUTPUT.PUT_LINE(RAWTOHEX(HASH_UTIL_PKG.SHA1(UTL_RAW.CAST_TO_RAW('The quick brown fox jumps over the lazy dog'))));
  DBMS_OUTPUT.PUT_LINE(RAWTOHEX(HASH_UTIL_PKG.SHA256(UTL_RAW.CAST_TO_RAW(''))));
  DBMS_OUTPUT.PUT_LINE(RAWTOHEX(HASH_UTIL_PKG.SHA256(UTL_RAW.CAST_TO_RAW('The quick brown fox jumps over the lazy dog'))));
END;

results in

DA39A3EE5E6B4B0D3255BFEF95601890AFD80709
2FD4E1C67A2D28FCED849EE1BB76E7391B93EB12
E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855
D7A8FBB307D7809469CA9ABCB0082E4F8D5651E46D3CDB762D02D0BF37C9E592