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diff --git a/doc/envelope.doc b/doc/envelope.doc
deleted file mode 100644
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@@ -1,67 +0,0 @@
-The following routines are use to create 'digital' envelopes.
-By this I mean that they perform various 'higher' level cryptographic
-functions.  Have a read of 'cipher.doc' and 'digest.doc' since those
-routines are used by these functions.
-cipher.doc contains documentation about the cipher part of the
-envelope library and digest.doc contatins the description of the
-message digests supported.
-
-To 'sign' a document involves generating a message digest and then encrypting
-the digest with an private key.
-
-#define EVP_SignInit(a,b)		EVP_DigestInit(a,b)
-#define EVP_SignUpdate(a,b,c)		EVP_DigestUpdate(a,b,c)
-Due to the fact this operation is basically just an extended message
-digest, the first 2 functions are macro calls to Digest generating
-functions.
-
-int     EVP_SignFinal(
-EVP_MD_CTX *ctx,
-unsigned char *md,
-unsigned int *s,
-EVP_PKEY *pkey);
-	This finalisation function finishes the generation of the message
-digest and then encrypts the digest (with the correct message digest 
-object identifier) with the EVP_PKEY private key.  'ctx' is the message digest
-context.  'md' will end up containing the encrypted message digest.  This
-array needs to be EVP_PKEY_size(pkey) bytes long.  's' will actually
-contain the exact length.  'pkey' of course is the private key.  It is
-one of EVP_PKEY_RSA or EVP_PKEY_DSA type.
-If there is an error, 0 is returned, otherwise 1.
-		
-Verify is used to check an signed message digest.
-
-#define EVP_VerifyInit(a,b)		EVP_DigestInit(a,b)
-#define EVP_VerifyUpdate(a,b,c)		EVP_DigestUpdate(a,b,c)
-Since the first step is to generate a message digest, the first 2 functions
-are macros.
-
-int EVP_VerifyFinal(
-EVP_MD_CTX *ctx,
-unsigned char *md,
-unsigned int s,
-EVP_PKEY *pkey);
-	This function finishes the generation of the message digest and then
-compares it with the supplied encrypted message digest.  'md' contains the
-'s' bytes of encrypted message digest.  'pkey' is used to public key decrypt
-the digest.  It is then compared with the message digest just generated.
-If they match, 1 is returned else 0.
-
-int	EVP_SealInit(EVP_CIPHER_CTX *ctx, EVP_CIPHER *type, unsigned char **ek,
-		int *ekl, unsigned char *iv, EVP_PKEY **pubk, int npubk);
-Must have at least one public key, error is 0.  I should also mention that
-the buffers pointed to by 'ek' need to be EVP_PKEY_size(pubk[n]) is size.
-
-#define EVP_SealUpdate(a,b,c,d,e)	EVP_EncryptUpdate(a,b,c,d,e)	
-void	EVP_SealFinal(EVP_CIPHER_CTX *ctx,unsigned char *out,int *outl);
-
-
-int	EVP_OpenInit(EVP_CIPHER_CTX *ctx,EVP_CIPHER *type,unsigned char *ek,
-		int ekl,unsigned char *iv,EVP_PKEY *priv);
-0 on failure
-
-#define EVP_OpenUpdate(a,b,c,d,e)	EVP_DecryptUpdate(a,b,c,d,e)
-
-int	EVP_OpenFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl);
-Decrypt final return code
-