Unix-commands-dsa
-Unix、Linuxコマンド
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NAME
概要
*openssldsa-inform PEM | DER-outform PEM | DER-in filename-passin arg-out filename-passout arg-des-des3-idea-text-noout-modulus-pubin-pubout-engine id*説明
- dsa DSA Notepkcs8 *
コマンドオプション
| Tag | Description |
|---|---|
| *-inform DER | PEM *a |
|
This specifies the input format. The* DER* option with a private key uses an ASN1 DER encoded form of an ASN.1 SEQUENCE consisting of the values of version (currently zero), p, q, g, the public and private key components respectively as ASN.1 INTEGERs. When used with a public key it uses a SubjectPublicKeyInfo structure: it is an error if the key is not DSA. PEM 形式はデフォルトの形式です。追加のヘッダー行とフッター行でエンコードされた DER 形式のbase64で構成されます。 秘密鍵の場合、PKCS＃8形式も受け入れられます。 |
*-outform DER |
| PEM * | This specifies the output format, the options have the same meaning as the* -inform* option. |
| -in filename | This specifies the input filename to read a key from or standard input if this option is not specified. If the key is encrypted a pass phrase will be prompted for. |
| *-passin arg * | the input file password source. For more information about the format of* arg see the PASS PHRASE ARGUMENTS* section in openssl(1). |
| *-out filename * | This specifies the output filename to write a key to or standard output by is not specified. If any encryption options are set then a pass phrase will be prompted for. The output filename should* not* be the same as the input filename. |
| *-passout arg * | the output file password source. For more information about the format of* arg see the PASS PHRASE ARGUMENTS* section in openssl(1). |
| *-des | -des3 |
| -idea * | These options encrypt the private key with the DES, triple DES, or the IDEA ciphers respectively before outputting it. A pass phrase is prompted for. If none of these options is specified the key is written in plain text. This means that using the* dsa* utility to read in an encrypted key with no encryption option can be used to remove the pass phrase from a key, or by setting the encryption options it can be use to add or change the pass phrase. These options can only be used with PEM format output files. |
| -text | prints out the public, private key components and parameters. |
| -noout | this option prevents output of the encoded version of the key. |
| -modulus | this option prints out the value of the public key component of the key. |
| -pubin | by default a private key is read from the input file: with this option a public key is read instead. |
| -pubout | by default a private key is output. With this option a public key will be output instead. This option is automatically set if the input is a public key. |
| *-engine id * | specifying an engine (by it’s unique* id string) will cause req* to attempt to obtain a functional reference to the specified engine, thus initialising it if needed. The engine will then be set as the default for all available algorithms. |
ノート
PEM
++
| -----BEGIN DSA PRIVATE KEY----- -----END DSA PRIVATE KEY----- |
PEM公開キー形式では、ヘッダー行とフッター行が使用されます。
++
| -----BEGIN PUBLIC KEY----- -----END PUBLIC KEY----- |
例
DSA秘密鍵のパスフレーズを削除するには：
++
| openssl dsa -in key.pem -out keyout.pem |
トリプルDESを使用して秘密鍵を暗号化するには：
++
| openssl dsa -in key.pem -des3 -out keyout.pem |
秘密鍵をPEMからDER形式に変換するには：
++
| openssl dsa -in key.pem -outform DER -out keyout.der |
秘密鍵のコンポーネントを標準出力に出力するには：
++
| openssl dsa -in key.pem -text -noout |
秘密鍵の公開部分のみを出力するには：
++
| openssl dsa -in key.pem -pubout -out pubkey.pem |
関連項目
dsaparam（1）、_ gendsa_（1）、_ rsa_（1）、_ genrsa_（1）link：/unix_commands/index [previous] link：/unix_commands/index [next]リンク：/cgi-bin/printversion.cgi？tutorial = unix_commands＆file = [Printer Friendly]
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