Unix-commands-ecparam
提供：Dev Guides
-Unix、Linuxコマンド
link：/unix_commands/index [previous] link：/unix_commands/index [next] [[1]] php [AddThis Social Bookmark Button]
NAME
概要
説明
EC
オプション
| Tag | Description |
|---|---|
| *-inform DER | PEM * |
| This specifies the input format. The* DER option uses an ASN.1 DER encoded form compatible with RFC 3279 EcpkParameters. The PEM form is the default format: it consists of the DER* format base64 encoded with additional header and footer lines. | *-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 parameters from or standard input if this option is not specified. |
| *-out filename * | This specifies the output filename parameters to. Standard output is used if this option is not present. The output filename should* not* be the same as the input filename. |
| -noout | This option inhibits the output of the encoded version of the parameters. |
| -text | This option prints out the EC parameters in human readable form. |
| *-C * | This option converts the EC parameters into C code. The parameters can then be loaded by calling the* *get_ec_group_XXX() function.
|
| -check | Validate the elliptic curve parameters. |
| *-name arg * | Use the EC parameters with the specified ’short’ name. Use* -list_curves* to get a list of all currently implemented EC parameters. |
| *-list_curves * | If this options is specified* ecparam* will print out a list of all currently implemented EC parameters names and exit. |
| *-conv_form * | This specifies how the points on the elliptic curve are converted into octet strings. Possible values are:* compressed (the default value), uncompressed and hybrid*. For more information regarding the point conversion forms please read the X9.62 standard. Note *Due to patent issues the compressed option is disabled by default for binary curves and can be enabled by defining the preprocessor macro OPENSSL_EC_BIN_PT_COMP* at compile time. |
| *-param_enc arg * | This specifies how the elliptic curve parameters are encoded. Possible value are:* named_curve*, i.e. the ec parameters are specified by a OID, or explicit *where the ec parameters are explicitly given (see RFC 3279 for the definition of the EC parameters structures). The default value is named_curve*. Note *the implicitlyCA* alternative ,as specified in RFC 3279, is currently not implemented in OpenSSL. |
| -no_seed | This option inhibits that the ’seed’ for the parameter generation is included in the ECParameters structure (see RFC 3279). |
| -genkey | This option will generate a EC private key using the specified parameters. |
| *-rand file(s) * | a file or files containing random data used to seed the random number generator, or an EGD socket (see RAND_egd(3)). Multiple files can be specified separated by a OS-dependent character. The separator is* ; for MS-Windows, , for OpenVMS, and :* for all others. |
| *-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
PEMEC
++
| -----BEGIN EC PARAMETERS----- -----END EC PARAMETERS----- |
現在、OpenSSLは新しいグループを生成できないため、 ecparam は既知の（名前付き）曲線からのみECパラメーターを作成できます。
例
EC
++
| openssl ecparam -out ec_param.pem -name prime192v1 |
明示的なパラメーターでECパラメーターを作成するには：
++
| openssl ecparam -out ec_param.pem -name prime192v1 -param_enc explicit |
特定のECパラメータを検証するには：
++
| openssl ecparam -in ec_param.pem -check |
ECパラメータと秘密キーを作成するには：
++
| openssl ecparam -out ec_key.pem -name prime192v1 -genkey |
ポイントのエンコードを「圧縮」に変更するには：
++
| openssl ecparam -in ec_in.pem -out ec_out.pem -conv_form compressed |
ECパラメーターを標準出力に出力するには：
++
| openssl ecparam -in ec_param.pem -noout -text |
関連項目
ec（1）、_ dsaparam_（1）
歴史
ecparamコマンドは、OpenSSL 0.9.8で初めて導入されました。
著者
OpenSSLプロジェクト（http://www.openssl.org）のNils Larschリンク：/unix_commands/index [previous]リンク：/unix_commands/index [image:/next。 gif [次へ]]リンク：/cgi-bin/printversion.cgi？tutorial = unix_commands＆file = [Printer Friendly]
| Advertisements |
