forked from golang/hotime
37 lines
948 B
Go
37 lines
948 B
Go
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package security
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import (
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"crypto/subtle"
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)
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func SecureCompare(given, actual []byte) bool {
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if subtle.ConstantTimeEq(int32(len(given)), int32(len(actual))) == 1 {
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if subtle.ConstantTimeCompare(given, actual) == 1 {
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return true
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}
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return false
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}
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// Securely compare actual to itself to keep constant time, but always return false
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if subtle.ConstantTimeCompare(actual, actual) == 1 {
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return false
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}
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return false
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}
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func SecureCompareString(given, actual string) bool {
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// The following code is incorrect:
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// return SecureCompare([]byte(given), []byte(actual))
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if subtle.ConstantTimeEq(int32(len(given)), int32(len(actual))) == 1 {
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if subtle.ConstantTimeCompare([]byte(given), []byte(actual)) == 1 {
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return true
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}
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return false
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}
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// Securely compare actual to itself to keep constant time, but always return false
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if subtle.ConstantTimeCompare([]byte(actual), []byte(actual)) == 1 {
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return false
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}
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return false
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}
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