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Diffstat (limited to 'src/rtl/sha512_h_constants.v')
| -rw-r--r-- | src/rtl/sha512_h_constants.v | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/src/rtl/sha512_h_constants.v b/src/rtl/sha512_h_constants.v new file mode 100644 index 0000000..3a38712 --- /dev/null +++ b/src/rtl/sha512_h_constants.v @@ -0,0 +1,143 @@ +//====================================================================== +// +// sha512_h_constants.v +// --------------------- +// The H initial constants for the different modes in SHA-512. +// +// +// Author: Joachim Strombergson +// Copyright (c) 2014, SUNET +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or +// without modification, are permitted provided that the following +// conditions are met: +// +// 1. Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// +// 2. Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in +// the documentation and/or other materials provided with the +// distribution. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, +// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF +// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +// +//====================================================================== + +module sha512_h_constants( + input wire [1 : 0] mode, + + output wire [63 : 0] H0, + output wire [63 : 0] H1, + output wire [63 : 0] H2, + output wire [63 : 0] H3, + output wire [63 : 0] H4, + output wire [63 : 0] H5, + output wire [63 : 0] H6, + output wire [63 : 0] H7 + ); + + //---------------------------------------------------------------- + // Wires. + //---------------------------------------------------------------- + reg [63 : 0] tmp_H0; + reg [63 : 0] tmp_H1; + reg [63 : 0] tmp_H2; + reg [63 : 0] tmp_H3; + reg [63 : 0] tmp_H4; + reg [63 : 0] tmp_H5; + reg [63 : 0] tmp_H6; + reg [63 : 0] tmp_H7; + + + //---------------------------------------------------------------- + // Concurrent connectivity for ports etc. + //---------------------------------------------------------------- + assign H0 = tmp_H0; + assign H1 = tmp_H1; + assign H2 = tmp_H2; + assign H3 = tmp_H3; + assign H4 = tmp_H4; + assign H5 = tmp_H5; + assign H6 = tmp_H6; + assign H7 = tmp_H7; + + + //---------------------------------------------------------------- + // mode_mux + // + // Based on the given mode, the correct H constants are selected. + //---------------------------------------------------------------- + always @* + begin : mode_mux + case(mode) + 0: + begin + // SHA-512/224 + tmp_H0 = 64'h8c3d37c819544da2; + tmp_H1 = 64'h73e1996689dcd4d6; + tmp_H2 = 64'h1dfab7ae32ff9c82; + tmp_H3 = 64'h679dd514582f9fcf; + tmp_H4 = 64'h0f6d2b697bd44da8; + tmp_H5 = 64'h77e36f7304c48942; + tmp_H6 = 64'h3f9d85a86a1d36c8; + tmp_H7 = 64'h1112e6ad91d692a1; + end + + 1: + begin + // SHA-512/256 + tmp_H0 = 64'h22312194fc2bf72c; + tmp_H1 = 64'h9f555fa3c84c64c2; + tmp_H2 = 64'h2393b86b6f53b151; + tmp_H3 = 64'h963877195940eabd; + tmp_H4 = 64'h96283ee2a88effe3; + tmp_H5 = 64'hbe5e1e2553863992; + tmp_H6 = 64'h2b0199fc2c85b8aa; + tmp_H7 = 64'h0eb72ddc81c52ca2; + end + + 2: + begin + // SHA-384 + tmp_H0 = 64'hcbbb9d5dc1059ed8; + tmp_H1 = 64'h629a292a367cd507; + tmp_H2 = 64'h9159015a3070dd17; + tmp_H3 = 64'h152fecd8f70e5939; + tmp_H4 = 64'h67332667ffc00b31; + tmp_H5 = 64'h8eb44a8768581511; + tmp_H6 = 64'hdb0c2e0d64f98fa7; + tmp_H7 = 64'h47b5481dbefa4fa4; + end + + 3: + begin + // SHA-512 + tmp_H0 = 64'h6a09e667f3bcc908; + tmp_H1 = 64'hbb67ae8584caa73b; + tmp_H2 = 64'h3c6ef372fe94f82b; + tmp_H3 = 64'ha54ff53a5f1d36f1; + tmp_H4 = 64'h510e527fade682d1; + tmp_H5 = 64'h9b05688c2b3e6c1f; + tmp_H6 = 64'h1f83d9abfb41bd6b; + tmp_H7 = 64'h5be0cd19137e2179; + end + endcase // case (addr) + end // block: mode_mux +endmodule // sha512_h_constants + +//====================================================================== +// sha512_h_constants.v +//====================================================================== |