diff --git a/lib/asn1/rfc2459.asn1 b/lib/asn1/rfc2459.asn1
index 91abf4c09..9d6c9a08f 100644
--- a/lib/asn1/rfc2459.asn1
+++ b/lib/asn1/rfc2459.asn1
@@ -283,6 +283,18 @@ RSAPublicKey ::= SEQUENCE {
 	publicExponent INTEGER -- e
 }
 
+RSAPrivateKey ::= SEQUENCE {
+	version INTEGER (0..4294967295),
+	modulus INTEGER, -- n
+	publicExponent INTEGER, -- e
+	privateExponent INTEGER, -- d
+	prime1 INTEGER, -- p
+	prime2 INTEGER, -- q
+	exponent1 INTEGER, -- d mod (p-1)
+	exponent2 INTEGER, -- d mod (q-1)
+	coefficient INTEGER -- (inverse of q) mod p
+}
+
 DigestInfo ::= SEQUENCE {
 	digestAlgorithm AlgorithmIdentifier,
 	digest OCTET STRING