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Add the SM4 block cipher, also a no-padding option for block ciphers.

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This adds an implementation of the SM4 block cipher, and operations
to encrypt and decrypt using it with CBC,ECB,CFB,OFB,CTR modes.

Also, a "no padding" option is added for AES,DES,3DES and SM4
decryption in ECB/CBC modes. This variant does not attempt to
validate the last block as being PKCS#7 padded.

This is useful, both since other padding schemes exist, and also
for decrypting data where the final block is missing.
This commit is contained in:
swesven 2021-03-24 00:58:54 +01:00
parent 5029356514
commit 6155634d3b
9 changed files with 821 additions and 7 deletions
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1
tests/operations/index.mjs
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@ -74,6 +74,7 @@ import "./tests/SeqUtils.mjs";
import "./tests/SetDifference.mjs";
import "./tests/SetIntersection.mjs";
import "./tests/SetUnion.mjs";
import "./tests/SM4.mjs";
import "./tests/StrUtils.mjs";
import "./tests/SymmetricDifference.mjs";
import "./tests/TextEncodingBruteForce.mjs";