curve25519: Support loading Ed25519 public keys from simple blobs

src/libstrongswan/credentials/builder.c

@@ -73,6 +73,7 @@ ENUM(builder_part_names, BUILD_FROM_FILE, BUILD_END,
 	"BUILD_SAFE_PRIMES",
 	"BUILD_SHARES",
 	"BUILD_THRESHOLD",
+	"BUILD_EDDSA_PUB",
 	"BUILD_EDDSA_PRIV_ASN1_DER",
 	"BUILD_END",
 );

src/libstrongswan/credentials/builder.h

@@ -156,6 +156,8 @@ enum builder_part_t {
 	BUILD_SHARES,
 	/** minimum number of participating private key shares */
 	BUILD_THRESHOLD,
+	/** EdDSA public key blob */
+	BUILD_EDDSA_PUB,
 	/** DER encoded ASN.1 EdDSA private key */
 	BUILD_EDDSA_PRIV_ASN1_DER,
 	/** end of variable argument builder list */