51 lines
1.9 KiB
Plaintext
51 lines
1.9 KiB
Plaintext
create or replace package hash_util_pkg as
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/*
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Purpose:
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Calculates SHA-1 and SHA-2 hashes.
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Pure PL/SQL implementation. Uses decimal caclulations, works very slow.
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Use DBMS_CRYPTO or external Java functions for quick hash calculation, whenever possible.
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Author: Vadim Dvorovenko
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Changes:
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Who Date Description
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------ ---------- --------------------------------
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DVN 09.12.2014 Created
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DVN 26.11.2016 Formatting code for Alexandria library, BLOB verison
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DVN 27.11.2016 Fully rewritten process_bytes procedures.
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DVN 27.11.2016 Added SHA-224, SHA-384, SHA-512, SHA-512/256, SHA-512/224
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*/
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subtype sha1_checksum_raw is raw(20);
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subtype sha224_checksum_raw is raw(28);
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subtype sha256_checksum_raw is raw(32);
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subtype sha384_checksum_raw is raw(48);
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subtype sha512_checksum_raw is raw(64);
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-- Raw versions. Max p_buffer length - 16384 bytes
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function sha1(p_buffer in raw) return sha1_checksum_raw;
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function sha224(p_buffer in raw) return sha224_checksum_raw;
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function sha256(p_buffer in raw) return sha256_checksum_raw;
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function sha384(p_buffer in raw) return sha384_checksum_raw;
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function sha512(p_buffer in raw) return sha512_checksum_raw;
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function sha512_224(p_buffer in raw) return sha224_checksum_raw;
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function sha512_256(p_buffer in raw) return sha256_checksum_raw;
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-- Blob versions.
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function sha1(p_buffer in blob) return sha1_checksum_raw;
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function sha224(p_buffer in blob) return sha224_checksum_raw;
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function sha256(p_buffer in blob) return sha256_checksum_raw;
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function sha384(p_buffer in blob) return sha384_checksum_raw;
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function sha512(p_buffer in blob) return sha512_checksum_raw;
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function sha512_224(p_buffer in blob) return sha224_checksum_raw;
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function sha512_256(p_buffer in blob) return sha256_checksum_raw;
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procedure unittest;
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end hash_util_pkg;
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/
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