Procedures and functions
| msgdigest | 
     Compute the message digest of a document.
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| msgsign | 
     Compute the digital signature of a document.
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| msgverify | 
     Verify the digital signature of a document.
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| RSAfingerprint | 
     Generate the fingerprint of an RSA key.
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| RSAgenkey | 
     Create a new RSA key pair.
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| RSAgetkeysize | 
     Get the size of an RSA key.
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| RSAisprivate | 
     Check whether an RSA key is private.
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| RSAloadkey | 
     Load an RSA key file into memory.
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| RSAprivdecrypt | 
     Decrypt a document using an RSA private key.
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| RSApubencrypt | 
     Encrypt a document using an RSA public key.
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| RSAsavekey | 
     Save an RSA key to a file.
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| sslivsize | 
     Get the size of the initialisation vector of a cipher.
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| sslkeysize | 
     Get the size of the key required by a symmetric cipher.
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| sslmdsize | 
     Get the size of a message digest.
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| sslrandom | 
     Generate a random number.
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| sslrandomdata | 
     Generate a random data file.
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| x509check | 
     Check the compatibility of a private key with an X509 certificate.
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| x509getinfo | 
     Retrieve information stored in an X509 certificate.
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| x509newcrt | 
     Create a new self-signed X509 certificate.
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