1 files changed, 0 insertions, 187 deletions
diff --git a/backend/node_modules/ecdsa-sig-formatter/src/ecdsa-sig-formatter.js b/backend/node_modules/ecdsa-sig-formatter/src/ecdsa-sig-formatter.js
deleted file mode 100644
index 38eeb9b..0000000
--- a/backend/node_modules/ecdsa-sig-formatter/src/ecdsa-sig-formatter.js
+++ /dev/null
@@ -1,187 +0,0 @@
-'use strict';
-
-var Buffer = require('safe-buffer').Buffer;
-
-var getParamBytesForAlg = require('./param-bytes-for-alg');
-
-var MAX_OCTET = 0x80,
-	CLASS_UNIVERSAL = 0,
-	PRIMITIVE_BIT = 0x20,
-	TAG_SEQ = 0x10,
-	TAG_INT = 0x02,
-	ENCODED_TAG_SEQ = (TAG_SEQ | PRIMITIVE_BIT) | (CLASS_UNIVERSAL << 6),
-	ENCODED_TAG_INT = TAG_INT | (CLASS_UNIVERSAL << 6);
-
-function base64Url(base64) {
-	return base64
-		.replace(/=/g, '')
-		.replace(/\+/g, '-')
-		.replace(/\//g, '_');
-}
-
-function signatureAsBuffer(signature) {
-	if (Buffer.isBuffer(signature)) {
-		return signature;
-	} else if ('string' === typeof signature) {
-		return Buffer.from(signature, 'base64');
-	}
-
-	throw new TypeError('ECDSA signature must be a Base64 string or a Buffer');
-}
-
-function derToJose(signature, alg) {
-	signature = signatureAsBuffer(signature);
-	var paramBytes = getParamBytesForAlg(alg);
-
-	// the DER encoded param should at most be the param size, plus a padding
-	// zero, since due to being a signed integer
-	var maxEncodedParamLength = paramBytes + 1;
-
-	var inputLength = signature.length;
-
-	var offset = 0;
-	if (signature[offset++] !== ENCODED_TAG_SEQ) {
-		throw new Error('Could not find expected "seq"');
-	}
-
-	var seqLength = signature[offset++];
-	if (seqLength === (MAX_OCTET | 1)) {
-		seqLength = signature[offset++];
-	}
-
-	if (inputLength - offset < seqLength) {
-		throw new Error('"seq" specified length of "' + seqLength + '", only "' + (inputLength - offset) + '" remaining');
-	}
-
-	if (signature[offset++] !== ENCODED_TAG_INT) {
-		throw new Error('Could not find expected "int" for "r"');
-	}
-
-	var rLength = signature[offset++];
-
-	if (inputLength - offset - 2 < rLength) {
-		throw new Error('"r" specified length of "' + rLength + '", only "' + (inputLength - offset - 2) + '" available');
-	}
-
-	if (maxEncodedParamLength < rLength) {
-		throw new Error('"r" specified length of "' + rLength + '", max of "' + maxEncodedParamLength + '" is acceptable');
-	}
-
-	var rOffset = offset;
-	offset += rLength;
-
-	if (signature[offset++] !== ENCODED_TAG_INT) {
-		throw new Error('Could not find expected "int" for "s"');
-	}
-
-	var sLength = signature[offset++];
-
-	if (inputLength - offset !== sLength) {
-		throw new Error('"s" specified length of "' + sLength + '", expected "' + (inputLength - offset) + '"');
-	}
-
-	if (maxEncodedParamLength < sLength) {
-		throw new Error('"s" specified length of "' + sLength + '", max of "' + maxEncodedParamLength + '" is acceptable');
-	}
-
-	var sOffset = offset;
-	offset += sLength;
-
-	if (offset !== inputLength) {
-		throw new Error('Expected to consume entire buffer, but "' + (inputLength - offset) + '" bytes remain');
-	}
-
-	var rPadding = paramBytes - rLength,
-		sPadding = paramBytes - sLength;
-
-	var dst = Buffer.allocUnsafe(rPadding + rLength + sPadding + sLength);
-
-	for (offset = 0; offset < rPadding; ++offset) {
-		dst[offset] = 0;
-	}
-	signature.copy(dst, offset, rOffset + Math.max(-rPadding, 0), rOffset + rLength);
-
-	offset = paramBytes;
-
-	for (var o = offset; offset < o + sPadding; ++offset) {
-		dst[offset] = 0;
-	}
-	signature.copy(dst, offset, sOffset + Math.max(-sPadding, 0), sOffset + sLength);
-
-	dst = dst.toString('base64');
-	dst = base64Url(dst);
-
-	return dst;
-}
-
-function countPadding(buf, start, stop) {
-	var padding = 0;
-	while (start + padding < stop && buf[start + padding] === 0) {
-		++padding;
-	}
-
-	var needsSign = buf[start + padding] >= MAX_OCTET;
-	if (needsSign) {
-		--padding;
-	}
-
-	return padding;
-}
-
-function joseToDer(signature, alg) {
-	signature = signatureAsBuffer(signature);
-	var paramBytes = getParamBytesForAlg(alg);
-
-	var signatureBytes = signature.length;
-	if (signatureBytes !== paramBytes * 2) {
-		throw new TypeError('"' + alg + '" signatures must be "' + paramBytes * 2 + '" bytes, saw "' + signatureBytes + '"');
-	}
-
-	var rPadding = countPadding(signature, 0, paramBytes);
-	var sPadding = countPadding(signature, paramBytes, signature.length);
-	var rLength = paramBytes - rPadding;
-	var sLength = paramBytes - sPadding;
-
-	var rsBytes = 1 + 1 + rLength + 1 + 1 + sLength;
-
-	var shortLength = rsBytes < MAX_OCTET;
-
-	var dst = Buffer.allocUnsafe((shortLength ? 2 : 3) + rsBytes);
-
-	var offset = 0;
-	dst[offset++] = ENCODED_TAG_SEQ;
-	if (shortLength) {
-		// Bit 8 has value "0"
-		// bits 7-1 give the length.
-		dst[offset++] = rsBytes;
-	} else {
-		// Bit 8 of first octet has value "1"
-		// bits 7-1 give the number of additional length octets.
-		dst[offset++] = MAX_OCTET	| 1;
-		// length, base 256
-		dst[offset++] = rsBytes & 0xff;
-	}
-	dst[offset++] = ENCODED_TAG_INT;
-	dst[offset++] = rLength;
-	if (rPadding < 0) {
-		dst[offset++] = 0;
-		offset += signature.copy(dst, offset, 0, paramBytes);
-	} else {
-		offset += signature.copy(dst, offset, rPadding, paramBytes);
-	}
-	dst[offset++] = ENCODED_TAG_INT;
-	dst[offset++] = sLength;
-	if (sPadding < 0) {
-		dst[offset++] = 0;
-		signature.copy(dst, offset, paramBytes);
-	} else {
-		signature.copy(dst, offset, paramBytes + sPadding);
-	}
-
-	return dst;
-}
-
-module.exports = {
-	derToJose: derToJose,
-	joseToDer: joseToDer
-};