EVP_ASYM_CIPHER-RSA(7ssl) OpenSSL EVP_ASYM_CIPHER-RSA(7ssl)

EVP_ASYM_CIPHER-RSA - RSA Asymmetric Cipher algorithm support

Asymmetric Cipher support for the RSA key type.

"pad-mode" (OSSL_ASYM_CIPHER_PARAM_PAD_MODE) <UTF8 string>
The default provider understands these RSA padding modes in string form:
"none" (OSSL_PKEY_RSA_PAD_MODE_NONE)
"oaep" (OSSL_PKEY_RSA_PAD_MODE_OAEP)
"pkcs1" (OSSL_PKEY_RSA_PAD_MODE_PKCSV15)
This padding mode is no longer supported by the FIPS provider for key agreement and key transport. (This is a FIPS 140-3 requirement)
"x931" (OSSL_PKEY_RSA_PAD_MODE_X931)
"pad-mode" (OSSL_ASYM_CIPHER_PARAM_PAD_MODE) <integer>
The default provider understands these RSA padding modes in integer form:
1 (RSA_PKCS1_PADDING)
This padding mode is no longer supported by the FIPS provider for key agreement and key transport. (This is a FIPS 140-3 requirement)
3 (RSA_NO_PADDING)
4 (RSA_PKCS1_OAEP_PADDING)
5 (RSA_X931_PADDING)

See EVP_PKEY_CTX_set_rsa_padding(3) for further details.

"digest" (OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST) <UTF8 string>
"digest-props" (OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST_PROPS) <UTF8 string>
"mgf1-digest" (OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST) <UTF8 string>
"mgf1-digest-props" (OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST_PROPS) <UTF8 string>
"oaep-label" (OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL) <octet string>
"tls-client-version" (OSSL_ASYM_CIPHER_PARAM_TLS_CLIENT_VERSION) <unsigned integer>
See RSA_PKCS1_WITH_TLS_PADDING on the page EVP_PKEY_CTX_set_rsa_padding(3).
"tls-negotiated-version" (OSSL_ASYM_CIPHER_PARAM_TLS_CLIENT_VERSION) <unsigned integer>
See RSA_PKCS1_WITH_TLS_PADDING on the page EVP_PKEY_CTX_set_rsa_padding(3).

See "Asymmetric Cipher Parameters" in provider-asym_cipher(7) for more information.

The OpenSSL FIPS provider also supports the following parameters:

"fips-indicator" (OSSL_ASYM_CIPHER_PARAM_FIPS_APPROVED_INDICATOR) <integer>
"key-check" (OSSL_ASYM_CIPHER_PARAM_FIPS_KEY_CHECK) <integer>
See "Asymmetric Cipher Parameters" in provider-asym_cipher(7) for more information.
"pkcs15-pad-disabled" (OSSL_ASYM_CIPHER_PARAM_FIPS_RSA_PKCS15_PAD_DISABLED) <integer>
The default value of 1 causes an error during encryption if the RSA padding mode is set to "pkcs1". Setting this to zero will ignore the error and set the approved "fips-indicator" to 0. This option breaks FIPS compliance if it causes the approved "fips-indicator" to return 0.

EVP_PKEY-RSA(7), EVP_PKEY(3), provider-asym_cipher(7), provider-keymgmt(7), OSSL_PROVIDER-default(7) OSSL_PROVIDER-FIPS(7)

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Licensed under the Apache License 2.0 (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at https://www.openssl.org/source/license.html.

2024-10-23 3.4.0