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Tweaks to various hashing functions to improve config options

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n1474335 2021-02-02 16:06:37 +00:00
parent 3ce3866000
commit 1b54584820
11 changed files with 104 additions and 34 deletions
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53
src/core/operations/SHA2.mjs
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@ -20,20 +20,58 @@ class SHA2 extends Operation {
this.name = "SHA2";
this.module = "Crypto";
this.description = "The SHA-2 (Secure Hash Algorithm 2) hash functions were designed by the NSA. SHA-2 includes significant changes from its predecessor, SHA-1. The SHA-2 family consists of hash functions with digests (hash values) that are 224, 256, 384 or 512 bits: SHA224, SHA256, SHA384, SHA512.<br><br><ul><li>SHA-512 operates on 64-bit words.</li><li>SHA-256 operates on 32-bit words.</li><li>SHA-384 is largely identical to SHA-512 but is truncated to 384 bytes.</li><li>SHA-224 is largely identical to SHA-256 but is truncated to 224 bytes.</li><li>SHA-512/224 and SHA-512/256 are truncated versions of SHA-512, but the initial values are generated using the method described in Federal Information Processing Standards (FIPS) PUB 180-4.</li></ul> The message digest algorithm consists, by default, of 64 rounds.";
this.description = "The SHA-2 (Secure Hash Algorithm 2) hash functions were designed by the NSA. SHA-2 includes significant changes from its predecessor, SHA-1. The SHA-2 family consists of hash functions with digests (hash values) that are 224, 256, 384 or 512 bits: SHA224, SHA256, SHA384, SHA512.<br><br><ul><li>SHA-512 operates on 64-bit words.</li><li>SHA-256 operates on 32-bit words.</li><li>SHA-384 is largely identical to SHA-512 but is truncated to 384 bytes.</li><li>SHA-224 is largely identical to SHA-256 but is truncated to 224 bytes.</li><li>SHA-512/224 and SHA-512/256 are truncated versions of SHA-512, but the initial values are generated using the method described in Federal Information Processing Standards (FIPS) PUB 180-4.</li></ul> The message digest algorithm for SHA256 variants consists, by default, of 64 rounds, and for SHA512 variants, it is, by default, 160.";
this.infoURL = "https://wikipedia.org/wiki/SHA-2";
this.inputType = "ArrayBuffer";
this.outputType = "string";
this.args = [
{
"name": "Size",
"type": "option",
"value": ["512", "256", "384", "224", "512/256", "512/224"]
name: "Size",
type: "argSelector",
value: [
{
name: "512",
on: [2],
off: [1]
},
{
name: "384",
on: [2],
off: [1]
},
{
name: "256",
on: [1],
off: [2]
},
{
name: "224",
on: [1],
off: [2]
},
{
name: "512/256",
on: [2],
off: [1]
},
{
name: "512/224",
on: [2],
off: [1]
}
]
},
{
name: "Rounds",
name: "Rounds", // For SHA256 variants
type: "number",
value: 64
value: 64,
min: 16
},
{
name: "Rounds", // For SHA512 variants
type: "number",
value: 160,
min: 32
}
];
}
@ -45,7 +83,8 @@ class SHA2 extends Operation {
*/
run(input, args) {
const size = args[0];
return runHash("sha" + size, input, {rounds: args[1]});
const rounds = (size === "256" || size === "224") ? args[1] : args[2];
return runHash("sha" + size, input, {rounds: rounds});
}
}