The symmetric cipher commands allow data to be encrypted or decrypted using various block and stream ciphers using keys based on passwords or explicitly provided. Base64 encoding or decoding can also be performed either by itself or in addition to the encryption or decryption.
Use a given number of iterations on the password in deriving the encryption key. High values increase the time required to brute-force the resulting file. This option enables the use of PBKDF2 algorithm to derive the key.
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Engines which provide entirely new encryption algorithms (such as the ccgost engine which provides gost89 algorithm) should be configured in the configuration file. Engines specified on the command line using -engine option can only be used for hardware-assisted implementations of ciphers which are supported by the OpenSSL core or another engine specified in the configuration file.
Without the -salt option it is possible to perform efficient dictionary attacks on the password and to attack stream cipher encrypted data. The reason for this is that without the salt the same password always generates the same encryption key.
This command does not support authenticated encryption modes like CCM and GCM, and will not support such modes in the future. This is due to having to begin streaming output (e.g., to standard output when -out is not used) before the authentication tag could be validated. When this command is used in a pipeline, the receiving end will not be able to roll back upon authentication failure. The AEAD modes currently in common use also suffer from catastrophic failure of confidentiality and/or integrity upon reuse of key/iv/nonce, and since openssl enc places the entire burden of key/iv/nonce management upon the user, the risk of exposing AEAD modes is too great to allow. These key/iv/nonce management issues also affect other modes currently exposed in this command, but the failure modes are less extreme in these cases, and the functionality cannot be removed with a stable release branch. For bulk encryption of data, whether using authenticated encryption modes or other modes, openssl-cms(1) is recommended, as it provides a standard data format and performs the needed key/iv/nonce management.
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How this originally came about was that I needed to be able to rsync to and from a remote location without the need for a human intervention regarding security. The instructions I was given were to use ssh-keygen to generate public/private keys and then ssh-copy-id to copy the public key to the remote host. I've just reinstalled 20.04 on another machine and used this successfully and the rsync is working without the need for a password. However if I clear the keys on the server out, reinstall 22.04 and do the same, it still prompts me for the password. I've updated my question to show the output of the commands as they are being run on Ubuntu 22.04 with the server name obscured for obvious reasons.
Windows provides the security policy setting, System cryptography: Use FIPS-compliant algorithms for encryption, hashing, and signing. This setting is used by some Microsoft products to determine whether to run in FIPS mode. When this policy is turned on, the validated cryptographic modules in Windows will also operate in FIPS mode. This policy may be set using Local Security Policy, as part of Group Policy, or through a Modern Device Management (MDM) solution. For more information on the policy, see System cryptography: Use FIPS-compliant algorithms for encryption, hashing, and signing.
#1278 and #1281); DRBG (Cert. #1555); DSA (Cert. #1223); ECDSA (Cert. #1133); HMAC (Cert. #3061); KAS (Cert. #127); KBKDF (Cert. #140); KTS (AES Cert. #4626; key establishment methodology provides between 128 bits and 256 bits of encryption strength); PBKDF (vendor affirmed); RSA (Certs. #2521 and #2522); SHS (Cert. #3790); Triple-DES (Cert. #2459Other algorithms: HMAC-MD5; MD5; DES; Legacy CAPI KDF; MD2; MD4; RC2; RC4; RSA (encrypt/decrypt)Validated Component Implementations: FIPS186-4 ECDSA - Signature Generation of hash sized messages (Cert. #1133); FIPS186-4 RSA; PKCS#1 v2.1 - RSASP1 Signature Primitive (Cert. #2521); FIPS186-4 RSA; RSADP - RSADP Primitive (Cert. #1281); SP800-135 - Section 4.1.1, IKEv1 Section 4.1.2, IKEv2 Section 4.2, TLS (Cert. #1278)Kernel Mode Cryptographic Primitives Library (cng.sys)10.0.15063#3094#3094FIPS approved algorithms: AES (Certs. #4624 and #4626); CKG (vendor affirmed); CVL (Certs. #1278 and #1281); DRBG (Cert. #1555); DSA (Cert. #1223); ECDSA (Cert. #1133); HMAC (Cert. #3061); KAS (Cert. #127); KBKDF (Cert. #140); KTS (AES Cert. #4626; key establishment methodology provides between 128 bits and 256 bits of encryption strength); PBKDF (vendor affirmed); RSA (Certs. #2521 and #2523); SHS (Cert. #3790); Triple-DES (Cert. #2459Other algorithms: HMAC-MD5; MD5; NDRNG; DES; Legacy CAPI KDF; MD2; MD4; RC2; RC4; RSA (encrypt/decrypt)[Validated Component Implementations: FIPS186-4 ECDSA - Signature Generation of hash sized messages (Cert. [#3094])#1133); FIPS186-4 RSA; PKCS#1 v2.1 - RSASP1 Signature Primitive (Cert.#2521[); FIPS186-4 RSA; RSADP - RSADP Primitive Cert.#1281Cert. #3094Boot Manager10.0.15063#3089FIPS approved algorithms: AES (Certs. #4624 and #4625); CKG (vendor affirmed); HMAC (Cert. #3061); PBKDF (vendor affirmed); RSA (Cert. #2523); SHS (Cert. #3790Other algorithms: PBKDF (vendor affirmed); VMK KDF (vendor affirmed)Windows OS Loader10.0.15063#3090FIPS approved algorithms: AES (Certs. #4624 and #4625); RSA (Cert. #2523); SHS (Cert. #3790Other algorithms: NDRNGWindows Resume [1]10.0.15063#3091FIPS approved algorithms: AES (Certs. #4624 and #4625); RSA (Cert. #2523); SHS (Cert. #3790)BitLocker Dump Filter [2]10.0.15063#3092FIPS approved algorithms: AES (Certs. #4624 and #4625); RSA (Cert. #2522); SHS (Cert. #3790)Code Integrity (ci.dll)10.0.15063#3093FIPS approved algorithms: AES (Cert. #4624); RSA (Certs. #2522 and #2523); SHS (Cert. #3790Validated Component Implementations: FIPS186-4 RSA; PKCS#1 v1.5 - RSASP1 Signature Primitive (Cert. #1282)Secure Kernel Code Integrity (skci.dll)[3]10.0.15063#3096FIPS approved algorithms: AES (Cert. #4624); RSA (Certs. #2522 and #2523); SHS (Cert. #3790Validated Component Implementations: FIPS186-4 RSA; PKCS#1 v1.5 - RSASP1 Signature Primitive (Cert. #1282)[1] Applies only to Home, Pro, Enterprise, Education, and S.
Other algorithms: HMAC-MD5; MD5; DES; Legacy CAPI KDF; MD2; MD4; RC2; RC4; RSA (encrypt/decrypt)Validated Component Implementations: FIPS186-4 ECDSA - Signature Generation of hash sized messages (Cert. #922); FIPS186-4 RSA; PKCS#1 v2.1 - RSASP1 Signature Primitive (Cert. #888); FIPS186-4 RSA; RSADP - RSADP Primitive (Cert. #887); SP800-135 - Section 4.1.1, IKEv1 Section 4.1.2, IKEv2 Section 4.2, TLS (Cert. #886)Kernel Mode Cryptographic Primitives Library (cng.sys)10.0.14393#2936FIPS approved algorithms: AES (Cert. #4064); DRBG (Cert. #1217); DSA (Cert. #1098); ECDSA (Cert. #911); HMAC (Cert. #2651); KAS (Cert. #92); KBKDF (Cert. #101); KTS (AES Cert. #4062; key wrapping; key establishment methodology provides between 128 bits and 256 bits of encryption strength); PBKDF (vendor affirmed); RSA (Certs. #2192, #2193, and #2195); SHS (Cert. #3347); Triple-DES (Cert. #2227)Other algorithms: HMAC-MD5; MD5; NDRNG; DES; Legacy CAPI KDF; MD2; MD4; RC2; RC4; RSA (encrypt/decrypt)Validated Component Implementations: FIPS186-4 ECDSA - Signature Generation of hash sized messages (Cert. #922); FIPS186-4 RSA; PKCS#1 v2.1 - RSASP1 Signature Primitive (Cert. #888); FIPS186-4 RSA; RSADP - RSADP Primitive (Cert. #887)Boot Manager10.0.14393#2931FIPS approved algorithms: AES (Certs. #4061 and #4064); HMAC (Cert. #2651); PBKDF (vendor affirmed); RSA (Cert. #2193); SHS (Cert. #3347)Other algorithms: MD5; PBKDF (non-compliant); VMK KDFBitLocker Windows OS Loader (winload)10.0.14393#2932FIPS approved algorithms: AES (Certs. #4061 and #4064); RSA (Cert. #2193); SHS (Cert. #3347)Other algorithms: NDRNG; MD5BitLocker Windows Resume (winresume)[1]10.0.14393#2933FIPS approved algorithms: AES (Certs. #4061 and #4064); RSA (Cert. #2193); SHS (Cert. #3347)Other algorithms: MD5BitLocker Dump Filter (dumpfve.sys)[2]10.0.14393#2934FIPS approved algorithms: AES (Certs. #4061 and #4064)Code Integrity (ci.dll)10.0.14393#2935FIPS approved algorithms: RSA (Cert. #2193); SHS (Cert. #3347)Other algorithms: AES (non-compliant); MD5Validated Component Implementations: FIPS186-4 RSA; PKCS#1 v2.1 - RSASP1 Signature Primitive (Cert. #888)Secure Kernel Code Integrity (skci.dll)[3]10.0.14393#2938FIPS approved algorithms: RSA (Certs. #2193); SHS (Certs. #3347)Other algorithms: MD5Validated Component Implementations: FIPS186-4 RSA; PKCS#1 v2.1 - RSASP1 Signature Primitive (Cert. #888)[1] Applies only to Home, Pro, Enterprise, and Enterprise LTSB
Other algorithms: DES; HMAC-MD5; Legacy CAPI KDF; MD2; MD4; MD5; RC2; RC4; RSA (encrypt/decrypt)Validated Component Implementations: FIPS186-4 ECDSA - Signature Generation of hash sized messages (Cert. #666); FIPS186-4 RSA; PKCS#1 v2.1 - RSASP1 Signature Primitive (Cert. #665); FIPS186-4 RSA; RSADP - RSADP Primitive (Cert. #663); SP800-135 - Section 4.1.1, IKEv1 Section 4.1.2, IKEv2 Section 4.2, TLS (Cert. #664)Kernel Mode Cryptographic Primitives Library (cng.sys)10.0.10586#2605FIPS approved algorithms: AES (Certs. #3629); DRBG (Certs. #955); DSA (Certs. #1024); ECDSA (Certs. #760); HMAC (Certs. #2381); KAS (Certs. #72; key agreement; key establishment methodology provides between 112 bits and 256 bits of encryption strength); KBKDF (Certs. #72); KTS (AES Certs. #3653; key wrapping; key establishment methodology provides between 128 bits and 256 bits of encryption strength); PBKDF (vendor affirmed); RSA (Certs. #1887, #1888, and #1889); SHS (Certs. #3047); Triple-DES (Certs. #2024)Other algorithms: DES; HMAC-MD5; Legacy CAPI KDF; MD2; MD4; MD5; RC2; RC4; RSA (encrypt/decrypt)Validated Component Implementations: FIPS186-4 ECDSA - Signature Generation of hash sized messages (Cert. #666); FIPS186-4 RSA; PKCS#1 v2.1 - RSASP1 Signature Primitive (Cert. #665); FIPS186-4 RSA; RSADP - RSADP Primitive (Cert. #663)Boot Manager [4]10.0.10586#2700FIPS approved algorithms: AES (Certs. #3653); HMAC (Cert. #2381); PBKDF (vendor affirmed); RSA (Cert. #1871); SHS (Certs. #3047 and #3048)Other algorithms: MD5; KDF (non-compliant); PBKDF (non-compliant)BitLocker Windows OS Loader (winload)[5]10.0.10586#2701FIPS approved algorithms: AES (Certs. #3629 and #3653); RSA (Cert. #1871); SHS (Cert. #3048)Other algorithms: MD5; NDRNGBitLocker Windows Resume (winresume)[6]10.0.10586#2702FIPS approved algorithms: AES (Certs. #3653); RSA (Cert. #1871); SHS (Cert. #3048)Other algorithms: MD5BitLocker Dump Filter (dumpfve.sys)[7]10.0.10586#2703FIPS approved algorithms: AES (Certs. #3653)Code Integrity (ci.dll)10.0.10586#2604FIPS approved algorithms: RSA (Certs. #1871); SHS (Certs. #3048)Other algorithms: AES (non-compliant); MD5Validated Component Implementations: FIPS186-4 RSA; PKCS#1 v2.1 - RSASP1 Signature Primitive (Cert. #665)Secure Kernel Code Integrity (skci.dll)[8]10.0.10586#2607FIPS approved algorithms: RSA (Certs. #1871); SHS (Certs. #3048)Other algorithms: MD5Validated Component Implementations: FIPS186-4 RSA; PKCS#1 v2.1 - RSASP1 Signature Primitive (Cert. #665)[4] Applies only to Home, Pro, Enterprise, Mobile, and Surface Hub 2ff7e9595c
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