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certain exponents cause generateKeyPair to hang #27087
Description
- Version: 11.13.0 and also tested 10.15.0
- Platform: Darwin calvin 18.2.0 Darwin Kernel Version 18.2.0: Thu Dec 20 20:46:53 PST 2018; root:xnu-4903.241.1~1/RELEASE_X86_64 x86_64
- Subsystem: crypto
certain exponents cause crypto.generateKeyPair to hang
try running
const { publicKey, privateKey } = crypto.generateKeyPairSync('rsa', {
modulusLength: 1024,
publicExponent: 3,
publicKeyEncoding: {
type: 'spki',
format: 'pem'
},
privateKeyEncoding: {
type: 'pkcs8',
format: 'pem'
}
});you'd expect it to eventually do something at least error, but it just hangs as do exponents 5 and 17, in fact the only one that seems to work is 0x10001.
This isn't a speed thing since I can generate a key like this in browser crypto and in pure javascript pretty easily.
looking at the tests it looks like 0x10001 is the only key being tested against
Activity
sam-github commentedon Apr 4, 2019
It segfaults for me.
node/src/node_crypto.cc
Lines 6066 to 6073 in 2f1ed5c
The exponent seems to be changing to a 0x555558b35110 somewhere along the way, though it is correct at
BN_set_word()in the above code. Still looking, in between doing other things.crypto: fix rsa key gen with non-default exponent
crypto: fix rsa key gen with non-default exponent
crypto: fix rsa key gen with non-default exponent