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Diffstat (limited to 'crypto/openssl/doc/HOWTO/keys.txt')
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diff --git a/crypto/openssl/doc/HOWTO/keys.txt b/crypto/openssl/doc/HOWTO/keys.txt deleted file mode 100644 index 7ae2a3a..0000000 --- a/crypto/openssl/doc/HOWTO/keys.txt +++ /dev/null @@ -1,73 +0,0 @@ -<DRAFT!> - HOWTO keys - -1. Introduction - -Keys are the basis of public key algorithms and PKI. Keys usually -come in pairs, with one half being the public key and the other half -being the private key. With OpenSSL, the private key contains the -public key information as well, so a public key doesn't need to be -generated separately. - -Public keys come in several flavors, using different cryptographic -algorithms. The most popular ones associated with certificates are -RSA and DSA, and this HOWTO will show how to generate each of them. - - -2. To generate a RSA key - -A RSA key can be used both for encryption and for signing. - -Generating a key for the RSA algorithm is quite easy, all you have to -do is the following: - - openssl genrsa -des3 -out privkey.pem 2048 - -With this variant, you will be prompted for a protecting password. If -you don't want your key to be protected by a password, remove the flag -'-des3' from the command line above. - - NOTE: if you intend to use the key together with a server - certificate, it may be a good thing to avoid protecting it - with a password, since that would mean someone would have to - type in the password every time the server needs to access - the key. - -The number 2048 is the size of the key, in bits. Today, 2048 or -higher is recommended for RSA keys, as fewer amount of bits is -consider insecure or to be insecure pretty soon. - - -3. To generate a DSA key - -A DSA key can be used for signing only. This is important to keep -in mind to know what kind of purposes a certificate request with a -DSA key can really be used for. - -Generating a key for the DSA algorithm is a two-step process. First, -you have to generate parameters from which to generate the key: - - openssl dsaparam -out dsaparam.pem 2048 - -The number 2048 is the size of the key, in bits. Today, 2048 or -higher is recommended for DSA keys, as fewer amount of bits is -consider insecure or to be insecure pretty soon. - -When that is done, you can generate a key using the parameters in -question (actually, several keys can be generated from the same -parameters): - - openssl gendsa -des3 -out privkey.pem dsaparam.pem - -With this variant, you will be prompted for a protecting password. If -you don't want your key to be protected by a password, remove the flag -'-des3' from the command line above. - - NOTE: if you intend to use the key together with a server - certificate, it may be a good thing to avoid protecting it - with a password, since that would mean someone would have to - type in the password every time the server needs to access - the key. - --- -Richard Levitte |
