var crypto/x509.debugAllowSHA1

2 uses

	crypto/x509 (current package)
		x509.go#L734: var debugAllowSHA1 = godebug.Get("x509sha1") == "1"
		x509.go#L795: 	return checkSignature(c.SignatureAlgorithm, c.RawTBSCertificate, c.Signature, parent.PublicKey, debugAllowSHA1)