Re: OpenSSL 1.1.1t cannot decrypt 1.0.2k-fips files

[Gary Li <garylimobile@xxxxxxxxx>]

Tomas,

Thank you for the suggestion, it still is not working for me. Here are my steps (you might see what I did wrong):

Encrypt:

$ more hello
Hello World!

$ openssl version -a
OpenSSL 1.0.2k-fips  26 Jan 2017
built on: reproducible build, date unspecified
platform: linux-x86_64
options:  bn(64,64) md2(int) rc4(16x,int) des(idx,cisc,16,int) idea(int) blowfish(idx)
compiler: gcc -I. -I.. -I../include  -fPIC -DOPENSSL_PIC -DZLIB -DOPENSSL_THREADS -D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H -DKRB5_MIT -m64 -DL_ENDIAN -Wall -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches   -m64 -mtune=generic -Wa,--noexecstack -DPURIFY -DOPENSSL_IA32_SSE2 -DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_MONT5 -DOPENSSL_BN_ASM_GF2m -DRC4_ASM -DSHA1_ASM -DSHA256_ASM -DSHA512_ASM -DMD5_ASM -DAES_ASM -DVPAES_ASM -DBSAES_ASM -DWHIRLPOOL_ASM -DGHASH_ASM -DECP_NISTZ256_ASM
OPENSSLDIR: "/etc/pki/tls"
engines:  rdrand dynamic

$ openssl enc -aes-256-cbc -in hello -out hello.en -k garystest

Decrypt:

$ openssl version -a
OpenSSL 1.1.1t  7 Feb 2023
built on: Thu Mar 30 22:02:29 2023 UTC
platform: linux-x86_64
options:  bn(64,64) rc4(16x,int) des(int) idea(int) blowfish(ptr)
compiler: gcc -fPIC -pthread -m64 -Wa,--noexecstack -Wall -O3 -DOPENSSL_USE_NODELETE -DL_ENDIAN -DOPENSSL_PIC -DOPENSSL_CPUID_OBJ -DOPENSSL_IA32_SSE2 -DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_MONT5 -DOPENSSL_BN_ASM_GF2m -DSHA1_ASM -DSHA256_ASM -DSHA512_ASM -DKECCAK1600_ASM -DRC4_ASM -DMD5_ASM -DAESNI_ASM -DVPAES_ASM -DGHASH_ASM -DECP_NISTZ256_ASM -DX25519_ASM -DPOLY1305_ASM -DNDEBUG
OPENSSLDIR: "/usr/local/ssl/ssl"
ENGINESDIR: "/usr/local/ssl/lib/engines-1.1"
Seeding source: os-specific

$ openssl enc -aes-256-cbc -d -md sha256 -in hello.en -out hello.de -k garystest
*** WARNING : deprecated key derivation used.
Using -iter or -pbkdf2 would be better.
bad decrypt
139817593476416:error:06065064:digital envelope routines:EVP_DecryptFinal_ex:bad decrypt:crypto/evp/evp_enc.c:612:

$ openssl enc -aes-256-cbc -d -md sha256 -nopad -in hello.en -out hello.de -k garystest
*** WARNING : deprecated key derivation used.
Using -iter or -pbkdf2 would be better.

more hello.en
Salted__z▒▒0>
▒       K▒▒>▒▒▒

$ openssl enc -aes-256-cbc -d -md sha256 -nopad -iter 10000 -in hello.en -out hello.de -k garystest

$ more hello.en
Salted__z▒▒0>
▒       K▒▒>▒▒▒

On Mon, Apr 3, 2023 at 8:44 AM Tomas Mraz <tomas@xxxxxxxxxxx> wrote:

As written in the openssl-enc manual page the default digest for
hashing the password was changed from MD5 to SHA256 in OpenSSL-1.1.0.

You need to use -md sha256 option with the enc tool on 1.1.1 to decrypt
files from the 1.0.2 version.

Tomas Mraz, OpenSSL

On Mon, 2023-04-03 at 07:03 -0700, Gary Li wrote:
> Yes, with Openssl enc tool to decrypt on Ubuntu 20.04, encrypted on
> CentOS 7.
>
> On Sun, Apr 2, 2023, 11:11 PM Tomas Mraz <tomas@xxxxxxxxxxx> wrote:
> > Hello,
> >
> > is that with the openssl enc tool? Or something else?
> >
> > Tomas Mraz, OpenSSL
> >
> > On Fri, 2023-03-31 at 16:27 -0700, Gary Li wrote:
> > > HI there,
> > > I have files in products that are generated by Openssl 1.0.2k-
> > > fips,
> > > but my new development system under Ubuntu 20.04 does not support
> > > this old version, and I cannot decrypt these files with version
> > > OpenSSL 1.1.1f or 1.1.1t.
> > > Decryption did not have warning or error messages but the
> > > contents
> > > were wrong.
> > > Are there any known solutions to this issue?
> > >
> > > Thank you in advance,
> > >
> > > Gary
> >

--
Tomáš Mráz, OpenSSL