Problem under Android with OpenSSL 1.1.1c and Qt 5.12.4.

[KarlHal]

Hello.

I have a problem with OpenSSL v1.1.1b and Qt 5.12.4 under Android

Everything works fine with a phone running with Android 7.1 but I get some error messages on tablets running on Android 4.4 and 5.0:

qt.network.ssl: QSslSocket: cannot resolve OPENSSL_init_ssl
qt.network.ssl: QSslSocket: cannot resolve OPENSSL_init_crypto
qt.network.ssl: QSslSocket: cannot resolve ASN1_STRING_get0_data
qt.network.ssl: QSslSocket: cannot resolve EVP_CIPHER_CTX_reset
qt.network.ssl: QSslSocket: cannot resolve RSA_bits
qt.network.ssl: QSslSocket: cannot resolve OPENSSL_sk_new_null
qt.network.ssl: QSslSocket: cannot resolve OPENSSL_sk_push
qt.network.ssl: QSslSocket: cannot resolve OPENSSL_sk_free
qt.network.ssl: QSslSocket: cannot resolve OPENSSL_sk_num
qt.network.ssl: QSslSocket: cannot resolve OPENSSL_sk_pop_free
qt.network.ssl: QSslSocket: cannot resolve OPENSSL_sk_value
qt.network.ssl: QSslSocket: cannot resolve DH_get0_pqg
qt.network.ssl: QSslSocket: cannot resolve SSL_CTX_set_options
qt.network.ssl: QSslSocket: cannot resolve SSL_CTX_set_ciphersuites
qt.network.ssl: QSslSocket: cannot resolve SSL_set_psk_use_session_callback
qt.network.ssl: QSslSocket: cannot resolve SSL_get_client_random
qt.network.ssl: QSslSocket: cannot resolve SSL_SESSION_get_master_key
qt.network.ssl: QSslSocket: cannot resolve SSL_session_reused
qt.network.ssl: QSslSocket: cannot resolve SSL_set_options
qt.network.ssl: QSslSocket: cannot resolve TLS_method
qt.network.ssl: QSslSocket: cannot resolve TLS_client_method
qt.network.ssl: QSslSocket: cannot resolve TLS_server_method
qt.network.ssl: QSslSocket: cannot resolve X509_STORE_CTX_get0_chain
qt.network.ssl: QSslSocket: cannot resolve X509_getm_notBefore
qt.network.ssl: QSslSocket: cannot resolve X509_getm_notAfter
qt.network.ssl: QSslSocket: cannot resolve X509_get_version
qt.network.ssl: QSslSocket: cannot resolve OpenSSL_version_num
qt.network.ssl: QSslSocket: cannot resolve OpenSSL_version
qt.network.ssl: Incompatible version of OpenSSL
qt.network.ssl: QSslSocket::connectToHostEncrypted: TLS initialization failed
qt.network.ssl: QSslSocket::connectToHostEncrypted: TLS initialization failed

In the pro file, I insert the files .so using this way.

ANDROID_EXTRA_LIBS = \
                   $$PWD/android/lib/armv7/1.1/libcrypto.so \
                   $$PWD/android/lib/armv7/1.1/libssl.so

I tried to compile the.so files or retrieve them from this site https://github.com/KDAB/android_openssl but the result is the same.

Why do I get the message "Incompatible version of OpenSSL"? However, I use Openssl 1.1.1.1c with Qt 5.12.4

Thanks,

Best regards !

Francky033

[SGaist]

Hi,

IIRC these old versions of Android provided OpenSSL so I wonder if it's that version that gets loaded for some reason.

[KarlHal]

Yes. The problem seems to come from the fact that Android versions < 6.0 do not have the TLS 1.2 protocol enabled.
So, the most prudent thing to do is to stay at the version of Qt 5.12.3 to maintain compatibility with the Android versions < 6.0

[vcamblor]

I had same problem and I obtained the next conclusion:
In versions < 6.0, Android includes this libraries in system. To use your libraries must be rename it to libcrypto_1_1.so and libssl_1_1.so. Furthermore, this libraries must be compiled with ANDROID_API 16 (to works over Android 4.1).

You can get the libraries from: https://github.com/KDAB/android_openssl/

[xtingray]

@vcamblor I think there is a typo in the name of the libraries. The right names are: libcrypto_1_1.so and libssl_1_1.so

Missing a "_" can be a nightmare at the moment of testing the APK :P

[vcamblor]

@xtingray Yes, you're right. I've made a mistake writing it