All files / lib/internal/crypto hashnames.js

100% Statements 90/90
87.5% Branches 7/8
100% Functions 1/1
100% Lines 90/90

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x 412x 412x 2884x 2884x 2884x 2884x 2884x 412x 103x 103x 2243x 2243x 2243x 2243x 2243x 2243x 2243x 103x 103x 103x 103x 103x 103x 103x 103x 103x 103x  
'use strict';
 
const {
  ObjectKeys,
  StringPrototypeToLowerCase,
} = primordials;
 
const kHashContextNode = 1;
const kHashContextWebCrypto = 2;
const kHashContextJwkRsa = 3;
const kHashContextJwkRsaPss = 4;
const kHashContextJwkRsaOaep = 5;
const kHashContextJwkHmac = 6;
const kHashContextJwkDsa = 7;
 
// WebCrypto and JWK use a bunch of different names for the
// standard set of SHA-* digest algorithms... which is ... fun.
// Here we provide a utility for mapping between them in order
// make it easier in the code.
 
const kHashNames = {
  sha1: {
    [kHashContextNode]: 'sha1',
    [kHashContextWebCrypto]: 'SHA-1',
    [kHashContextJwkRsa]: 'RS1',
    [kHashContextJwkRsaPss]: 'PS1',
    [kHashContextJwkRsaOaep]: 'RSA-OAEP',
    [kHashContextJwkHmac]: 'HS1',
    [kHashContextJwkDsa]: 'NODE-DSA-SHA-1',
  },
  sha256: {
    [kHashContextNode]: 'sha256',
    [kHashContextWebCrypto]: 'SHA-256',
    [kHashContextJwkRsa]: 'RS256',
    [kHashContextJwkRsaPss]: 'PS256',
    [kHashContextJwkRsaOaep]: 'RSA-OAEP-256',
    [kHashContextJwkHmac]: 'HS256',
    [kHashContextJwkDsa]: 'NODE-DSA-SHA-256',
  },
  sha384: {
    [kHashContextNode]: 'sha384',
    [kHashContextWebCrypto]: 'SHA-384',
    [kHashContextJwkRsa]: 'RS384',
    [kHashContextJwkRsaPss]: 'PS384',
    [kHashContextJwkRsaOaep]: 'RSA-OAEP-384',
    [kHashContextJwkHmac]: 'HS384',
    [kHashContextJwkDsa]: 'NODE-DSA-SHA-384',
  },
  sha512: {
    [kHashContextNode]: 'sha512',
    [kHashContextWebCrypto]: 'SHA-512',
    [kHashContextJwkRsa]: 'RS512',
    [kHashContextJwkRsaPss]: 'PS512',
    [kHashContextJwkRsaOaep]: 'RSA-OAEP-512',
    [kHashContextJwkHmac]: 'HS512',
    [kHashContextJwkDsa]: 'NODE-DSA-SHA-512',
  }
};
 
{
  // Index the aliases
  const keys = ObjectKeys(kHashNames);
  for (let n = 0; n < keys.length; n++) {
    const contexts = ObjectKeys(kHashNames[keys[n]]);
    for (let i = 0; i < contexts.length; i++) {
      const alias =
        StringPrototypeToLowerCase(kHashNames[keys[n]][contexts[i]]);
      if (kHashNames[alias] === undefined)
        kHashNames[alias] = kHashNames[keys[n]];
    }
  }
}
 
function normalizeHashName(name, context = kHashContextNode) {
  if (typeof name !== 'string')
    return name;
  name = StringPrototypeToLowerCase(name);
  const alias = kHashNames[name] && kHashNames[name][context];
  return alias || name;
}
 
normalizeHashName.kContextNode = kHashContextNode;
normalizeHashName.kContextWebCrypto = kHashContextWebCrypto;
normalizeHashName.kContextJwkRsa = kHashContextJwkRsa;
normalizeHashName.kContextJwkRsaPss = kHashContextJwkRsaPss;
normalizeHashName.kContextJwkRsaOaep = kHashContextJwkRsaOaep;
normalizeHashName.kContextJwkHmac = kHashContextJwkHmac;
normalizeHashName.kContextJwkDsa = kHashContextJwkDsa;
 
module.exports = normalizeHashName;