locallyVerifyUserStatement [1004861]

< > BotCompany Repo | #1004861 // locallyVerifyUserStatement

JavaX fragment (include)

static bool locallyVerifyUserStatement(S signed) {
  try {
    L<S> lines = toLines(signed);
    S authorLine = lines.get(lines.size()-2);
    S sigLine = lines.get(lines.size()-1);
    S text = fromLines(lines.subList(0, lines.size()-1));
    S author = dropPrefixMandatory("-", authorLine);
    S cid = trim(dropSuffix("[user]", author));
    if (!isComputerID(cid)) fail("Not a computer ID: " + cid);
    byte[] publicKey = PKI.userPublicKey();
    S sig = dropPrefixMandatory("sig: ", sigLine);
    ret PKI.verifySignature(publicKey, PKI.signatureFromString(sig), toUtf8(text));
  } catch (RuntimeException e) {
    ret false;
  }
}

Author comment

Began life as a copy of #1001567

Travelled to 14 computer(s): aoiabmzegqzx, bhatertpkbcr, cbybwowwnfue, cfunsshuasjs, ddnzoavkxhuk, gwrvuhgaqvyk, ishqpsrjomds, lpdgvwnxivlt, mqqgnosmbjvj, pyentgdyhuwx, pzhvpgtvlbxg, tslmcundralx, tvejysmllsmz, vouqrxazstgt

Snippet ID:

#1004861

Snippet name:

locallyVerifyUserStatement

Eternal ID of this version:

#1004861/1

Text MD5:

77dba25c1bff4808af0bb91b27267508

Author:

stefan

Category:

javax

Type:

JavaX fragment (include)

Public (visible to everyone):

Yes

Archived (hidden from active list):

Created/modified:

2016-09-06 19:20:53

Source code size:

653 bytes / 16 lines

Pitched / IR pitched:

No / No

Views / Downloads:

681 / 720

Referenced in:

[show references]

1	static bool locallyVerifyUserStatement(S signed) {
2	try {
3	L<S> lines = toLines(signed);
4	S authorLine = lines.get(lines.size()-2);
5	S sigLine = lines.get(lines.size()-1);
6	S text = fromLines(lines.subList(0, lines.size()-1));
7	S author = dropPrefixMandatory("-", authorLine);
8	S cid = trim(dropSuffix("[user]", author));
9	if (!isComputerID(cid)) fail("Not a computer ID: " + cid);
10	byte[] publicKey = PKI.userPublicKey();
11	S sig = dropPrefixMandatory("sig: ", sigLine);
12	ret PKI.verifySignature(publicKey, PKI.signatureFromString(sig), toUtf8(text));
13	} catch (RuntimeException e) {
14	ret false;
15	}
16	}