rsaMakeKeys

Generate an RSA public/private key pair and save as two key files.

Syntax

Public Function rsaMakeKeys ( _
    szPubKeyFile As String, _
    szPriKeyFile As String, _
    szPassword As String, _
    nBits As Long, _
    Optional nExpFermat As Long = PKI_RSAEXP_EQ_65537, _
    Optional szParams As String = "", _
    Optional nOptions As Long = 0 _
) As Long

Parameters

szPubKeyFile

Output filename for public key.

szPriKeyFile

Output filename for (encrypted) private key.

szPassword

Password for encrypted private key (required).

nBits

Required key modulus size in bits (min 96).

nExpFermat

Exponent [default=65537=F4]

szParams

Optional parameters. A set of attribute name=value pairs separated by a semicolon ";" (see remarks).

nOptions

Use 0 for defaults.
A flag to indicate the password-based encryption scheme to be used to encrypt the private key file. Select from:

PKI_PBE_SHA_3DES (0) for "pbeWithSHAAnd3-KeyTripleDES-CBC" from PKCS12 (default)
PKI_PBE_PBKDF2_DESEDE3 for PBKDF2 using des-EDE3-CBC
PKI_PBE_PBKDF2_AES128 for PBKDF2 using aes128-CBC
PKI_PBE_PBKDF2_AES192 for PBKDF2 using aes192-CBC
PKI_PBE_PBKDF2_AES256 for PBKDF2 using aes256-CBC

plus optionally one of the following to output in textual PEM format [default format=DER binary]

PKI_KEY_FORMAT_PEM
PKI_KEY_FORMAT_SSL

and, optionally, add PKI_KEYGEN_INDICATE to indicate progress in a console window.

Return Value

Remarks

Example

' Create a 2048-bit RSA key pair using defaults
r = rsaMakeKeys("myrsa2048.pub", "myrsa2048.p8e", "password", 2048)
' Same but using stronger security and in PEM format
r = rsaMakeKeys("myrsa2048ex.pub", "myrsa2048ex.p8e", "password1", 2048,,"count=6000;prf=hmacWithSHA256", PKI_PBE_PBKDF2_AES128 Or PKI_KEY_FORMAT_PEM)