Initial QSfera import

Server/vendor/github.com/lestrrat-go/dsig/algorithms.go

@@ -0,0 +1,37 @@
+package dsig
+
+// This file defines verbose algorithm name constants that can be mapped to by
+// different standards (RFC7518, FIDO, etc.) for interoperability.
+//
+// The algorithm names are intentionally verbose to avoid any ambiguity about
+// the exact cryptographic operations being performed.
+
+const (
+	// HMAC signature algorithms
+	// These use Hash-based Message Authentication Code with specified hash functions
+	HMACWithSHA256 = "HMAC_WITH_SHA256"
+	HMACWithSHA384 = "HMAC_WITH_SHA384"
+	HMACWithSHA512 = "HMAC_WITH_SHA512"
+
+	// RSA signature algorithms with PKCS#1 v1.5 padding
+	// These use RSA signatures with PKCS#1 v1.5 padding and specified hash functions
+	RSAPKCS1v15WithSHA256 = "RSA_PKCS1v15_WITH_SHA256"
+	RSAPKCS1v15WithSHA384 = "RSA_PKCS1v15_WITH_SHA384"
+	RSAPKCS1v15WithSHA512 = "RSA_PKCS1v15_WITH_SHA512"
+
+	// RSA signature algorithms with PSS padding
+	// These use RSA signatures with Probabilistic Signature Scheme (PSS) padding
+	RSAPSSWithSHA256 = "RSA_PSS_WITH_SHA256"
+	RSAPSSWithSHA384 = "RSA_PSS_WITH_SHA384"
+	RSAPSSWithSHA512 = "RSA_PSS_WITH_SHA512"
+
+	// ECDSA signature algorithms
+	// These use Elliptic Curve Digital Signature Algorithm with specified curves and hash functions
+	ECDSAWithP256AndSHA256 = "ECDSA_WITH_P256_AND_SHA256"
+	ECDSAWithP384AndSHA384 = "ECDSA_WITH_P384_AND_SHA384"
+	ECDSAWithP521AndSHA512 = "ECDSA_WITH_P521_AND_SHA512"
+
+	// EdDSA signature algorithms
+	// These use Edwards-curve Digital Signature Algorithm (supports Ed25519 and Ed448)
+	EdDSA = "EDDSA"
+)