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Fix keepass-cr-recovery

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keepass-cr-recovery used the challenge unpadded, add padding as in
https://github.com/keepassxreboot/keepassxc/blob/develop/src/keys/drivers/YubiKeyInterfaceUSB.cpp\#L291
https://github.com/keepassxreboot/keepassxc/blob/develop/src/keys/drivers/YubiKeyInterfacePCSC.cpp\#L747

Closes #4744
This commit is contained in:
Philipp Riederer 2022-03-11 12:38:19 +01:00 • committed by Jonathan White
parent 8f76ea3106
commit e6a6ba7d63
1 changed files with 8 additions and 0 deletions
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8
utils/keepassxc-cr-recovery/main.go
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@ -169,6 +169,14 @@ func main() {
log.Fatalf("couldn't read challenge: %s", err) log.Fatalf("couldn't read challenge: %s", err)
} }
if len(challenge) < 64 {
padd := make([]byte, 64-len(challenge))
for i, _ := range padd {
padd[i] = byte(64-len(challenge))
}
challenge = append(challenge[:], padd[:]...)
}
mac := hmac.New(sha1.New, secret) mac := hmac.New(sha1.New, secret)
mac.Write(challenge) mac.Write(challenge)