diff -r 3af1d1c0ceb5 -r 058394513f33 MYPublicKey.h
--- a/MYPublicKey.h	Sun Apr 19 21:19:35 2009 -0700
+++ b/MYPublicKey.h	Sat Jun 06 15:36:35 2009 -0700
@@ -48,6 +48,24 @@
  *  Advanced methods. 
  */
 //@{
+
+/** Initializes a public key directly from its raw RSA modulus and exponent.
+    These numbers must come from an existing key-pair generated by the RSA algorithm; 
+    you CANNOT just pass in random data and create a working key! (To create a new key pair,
+    call -[MYKeychain generateRSAKeyPairOfSize:].)
+    @param modulus  RSA modulus, a very large integer represented as a blob of big-endian data.
+    @param exponent  RSA exponent, a prime number, commonly 17 or 65537.
+*/
+- (id) initWithModulus: (NSData*)modulus exponent: (unsigned)exponent;
+
+/** Retrieves the raw RSA modulus and exponent, which together uniquely specify the key.
+    The length of the modulus is the size, in bits, of the key: for example, a 2048-bit key
+    has 256 bytes of modulus data.
+    @param outModulus  On return, will contain the modulus: a very large positive integer represented
+                       as a blob of unsigned big-endian data.
+    @param outExponent  On return, will contain the exponent: a prime number, often 17 or 65537. */
+- (BOOL) getModulus: (NSData**)outModulus exponent: (unsigned*)outExponent;
+
 #if !TARGET_OS_IPHONE
 
 /** Encrypts a session key using this public key.