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diff --git a/src/lib/libcrypto/doc/d2i_RSAPublicKey.pod b/src/lib/libcrypto/doc/d2i_RSAPublicKey.pod
new file mode 100644
index 0000000000..aa6078bcf6
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+++ b/src/lib/libcrypto/doc/d2i_RSAPublicKey.pod
@@ -0,0 +1,67 @@
+=pod
+
+=head1 NAME
+
+d2i_RSAPublicKey, i2d_RSAPublicKey, d2i_RSAPrivateKey, i2d_RSAPrivateKey,
+d2i_RSA_PUBKEY, i2d_RSA_PUBKEY, i2d_Netscape_RSA,
+d2i_Netscape_RSA - RSA public and private key encoding functions.
+
+=head1 SYNOPSIS
+
+ #include <openssl/rsa.h>
+ #include <openssl/x509.h>
+
+ RSA * d2i_RSAPublicKey(RSA **a, const unsigned char **pp, long length);
+
+ int i2d_RSAPublicKey(RSA *a, unsigned char **pp);
+
+ RSA * d2i_RSA_PUBKEY(RSA **a, const unsigned char **pp, long length);
+
+ int i2d_RSA_PUBKEY(RSA *a, unsigned char **pp);
+
+ RSA * d2i_RSAPrivateKey(RSA **a, const unsigned char **pp, long length);
+
+ int i2d_RSAPrivateKey(RSA *a, unsigned char **pp);
+
+ int i2d_Netscape_RSA(RSA *a, unsigned char **pp, int (*cb)());
+
+ RSA * d2i_Netscape_RSA(RSA **a, const unsigned char **pp, long length, int (*cb)());
+
+=head1 DESCRIPTION
+
+d2i_RSAPublicKey() and i2d_RSAPublicKey() decode and encode a PKCS#1 RSAPublicKey
+structure.
+
+d2i_RSA_PUBKEY() and i2d_RSA_PUBKEY() decode and encode an RSA public key using
+a SubjectPublicKeyInfo (certificate public key) structure.
+
+d2i_RSAPrivateKey(), i2d_RSAPrivateKey() decode and encode a PKCS#1 RSAPrivateKey
+structure.
+
+d2i_Netscape_RSA(), i2d_Netscape_RSA() decode and encode an RSA private key in
+NET format.
+
+The usage of all of these functions is similar to the d2i_X509() and
+i2d_X509() described in the L<d2i_X509(3)|d2i_X509(3)> manual page.
+
+=head1 NOTES
+
+The B<RSA> structure passed to the private key encoding functions should have
+all the PKCS#1 private key components present.
+
+The data encoded by the private key functions is unencrypted and therefore 
+offers no private key security. 
+
+The NET format functions are present to provide compatibility with certain very
+old software. This format has some severe security weaknesses and should be
+avoided if possible.
+
+=head1 SEE ALSO
+
+L<d2i_X509(3)|d2i_X509(3)>
+
+=head1 HISTORY
+
+TBA
+
+=cut