diff options
Diffstat (limited to 'backend/node_modules/ecdsa-sig-formatter/src/param-bytes-for-alg.js')
-rw-r--r-- | backend/node_modules/ecdsa-sig-formatter/src/param-bytes-for-alg.js | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/backend/node_modules/ecdsa-sig-formatter/src/param-bytes-for-alg.js b/backend/node_modules/ecdsa-sig-formatter/src/param-bytes-for-alg.js new file mode 100644 index 0000000..9fe67ac --- /dev/null +++ b/backend/node_modules/ecdsa-sig-formatter/src/param-bytes-for-alg.js @@ -0,0 +1,23 @@ +'use strict'; + +function getParamSize(keySize) { + var result = ((keySize / 8) | 0) + (keySize % 8 === 0 ? 0 : 1); + return result; +} + +var paramBytesForAlg = { + ES256: getParamSize(256), + ES384: getParamSize(384), + ES512: getParamSize(521) +}; + +function getParamBytesForAlg(alg) { + var paramBytes = paramBytesForAlg[alg]; + if (paramBytes) { + return paramBytes; + } + + throw new Error('Unknown algorithm "' + alg + '"'); +} + +module.exports = getParamBytesForAlg; |