Merge pull request #5794 from mprse/cipher_dep

Fix undeclared dependencies: CIPHER
diff --git a/include/mbedtls/cipher.h b/include/mbedtls/cipher.h
index c04097d..9ce1195 100644
--- a/include/mbedtls/cipher.h
+++ b/include/mbedtls/cipher.h
@@ -844,6 +844,12 @@
  * \note            Some ciphers do not use IVs nor nonce. For these
  *                  ciphers, this function has no effect.
  *
+ * \note            For #MBEDTLS_CIPHER_CHACHA20, the nonce length must
+ *                  be 12, and the initial counter value is 0.
+ *
+ * \note            For #MBEDTLS_CIPHER_CHACHA20_POLY1305, the nonce length
+ *                  must be 12.
+ *
  * \param ctx       The generic cipher context. This must be initialized and
  *                  bound to a cipher information structure.
  * \param iv        The IV to use, or NONCE_COUNTER for CTR-mode ciphers. This
diff --git a/include/psa/crypto_values.h b/include/psa/crypto_values.h
index 6f83cc2..17d7a9b 100644
--- a/include/psa/crypto_values.h
+++ b/include/psa/crypto_values.h
@@ -489,8 +489,12 @@
  *
  * ChaCha20 and the ChaCha20_Poly1305 construction are defined in RFC 7539.
  *
- * Implementations must support 12-byte nonces, may support 8-byte nonces,
- * and should reject other sizes.
+ * \note For ChaCha20 and ChaCha20_Poly1305, Mbed TLS only supports
+ *       12-byte nonces.
+ *
+ * \note For ChaCha20, the initial counter value is 0. To encrypt or decrypt
+ *       with the initial counter value 1, you can process and discard a
+ *       64-byte block before the real data.
  */
 #define PSA_KEY_TYPE_CHACHA20                       ((psa_key_type_t)0x2004)
 
diff --git a/programs/aes/crypt_and_hash.c b/programs/aes/crypt_and_hash.c
index 74ea88c..7288548 100644
--- a/programs/aes/crypt_and_hash.c
+++ b/programs/aes/crypt_and_hash.c
@@ -137,11 +137,6 @@
             list++;
         }
 
-#if defined(_WIN32)
-        mbedtls_printf( "\n  Press Enter to exit this program.\n" );
-        fflush( stdout ); getchar();
-#endif
-
         goto exit;
     }
 
diff --git a/programs/hash/generic_sum.c b/programs/hash/generic_sum.c
index 9243f0a..f38a976 100644
--- a/programs/hash/generic_sum.c
+++ b/programs/hash/generic_sum.c
@@ -192,11 +192,6 @@
             list++;
         }
 
-#if defined(_WIN32)
-        mbedtls_printf( "\n  Press Enter to exit this program.\n" );
-        fflush( stdout ); getchar();
-#endif
-
         mbedtls_exit( exit_code );
     }
 
diff --git a/programs/hash/hello.c b/programs/hash/hello.c
index d2b6910..cb8de8b 100644
--- a/programs/hash/hello.c
+++ b/programs/hash/hello.c
@@ -59,11 +59,6 @@
 
     mbedtls_printf( "\n\n" );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( MBEDTLS_EXIT_SUCCESS );
 }
 #endif /* MBEDTLS_MD5_C */
diff --git a/programs/pkey/dh_client.c b/programs/pkey/dh_client.c
index d633e4d..45de57b 100644
--- a/programs/pkey/dh_client.c
+++ b/programs/pkey/dh_client.c
@@ -300,11 +300,6 @@
     mbedtls_ctr_drbg_free( &ctr_drbg );
     mbedtls_entropy_free( &entropy );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_AES_C && MBEDTLS_DHM_C && MBEDTLS_ENTROPY_C &&
diff --git a/programs/pkey/dh_genprime.c b/programs/pkey/dh_genprime.c
index 174a363..9ada4ea 100644
--- a/programs/pkey/dh_genprime.c
+++ b/programs/pkey/dh_genprime.c
@@ -186,11 +186,6 @@
     mbedtls_ctr_drbg_free( &ctr_drbg );
     mbedtls_entropy_free( &entropy );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_ENTROPY_C && MBEDTLS_FS_IO &&
diff --git a/programs/pkey/dh_server.c b/programs/pkey/dh_server.c
index 75713ff..2956308 100644
--- a/programs/pkey/dh_server.c
+++ b/programs/pkey/dh_server.c
@@ -322,11 +322,6 @@
     mbedtls_ctr_drbg_free( &ctr_drbg );
     mbedtls_entropy_free( &entropy );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_AES_C && MBEDTLS_DHM_C && MBEDTLS_ENTROPY_C &&
diff --git a/programs/pkey/ecdh_curve25519.c b/programs/pkey/ecdh_curve25519.c
index ca046fd..dff5480 100644
--- a/programs/pkey/ecdh_curve25519.c
+++ b/programs/pkey/ecdh_curve25519.c
@@ -222,11 +222,6 @@
 
 exit:
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_ecdh_free( &ctx_srv );
     mbedtls_ecdh_free( &ctx_cli );
     mbedtls_ctr_drbg_free( &ctr_drbg );
diff --git a/programs/pkey/ecdsa.c b/programs/pkey/ecdsa.c
index 550a230..c1c5070 100644
--- a/programs/pkey/ecdsa.c
+++ b/programs/pkey/ecdsa.c
@@ -232,11 +232,6 @@
 
 exit:
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_ecdsa_free( &ctx_verify );
     mbedtls_ecdsa_free( &ctx_sign );
     mbedtls_ctr_drbg_free( &ctr_drbg );
diff --git a/programs/pkey/gen_key.c b/programs/pkey/gen_key.c
index 7535eee..8779519 100644
--- a/programs/pkey/gen_key.c
+++ b/programs/pkey/gen_key.c
@@ -435,11 +435,6 @@
     mbedtls_ctr_drbg_free( &ctr_drbg );
     mbedtls_entropy_free( &entropy );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_PK_WRITE_C && MBEDTLS_PEM_WRITE_C && MBEDTLS_FS_IO &&
diff --git a/programs/pkey/key_app.c b/programs/pkey/key_app.c
index 4203902..bd16b24 100644
--- a/programs/pkey/key_app.c
+++ b/programs/pkey/key_app.c
@@ -324,11 +324,6 @@
     mbedtls_mpi_free( &D ); mbedtls_mpi_free( &E ); mbedtls_mpi_free( &DP );
     mbedtls_mpi_free( &DQ ); mbedtls_mpi_free( &QP );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_PK_PARSE_C && MBEDTLS_FS_IO &&
diff --git a/programs/pkey/key_app_writer.c b/programs/pkey/key_app_writer.c
index ed6addf..df1e502 100644
--- a/programs/pkey/key_app_writer.c
+++ b/programs/pkey/key_app_writer.c
@@ -454,11 +454,6 @@
     mbedtls_ctr_drbg_free( &ctr_drbg );
     mbedtls_entropy_free( &entropy );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_PK_PARSE_C && MBEDTLS_PK_WRITE_C && MBEDTLS_FS_IO &&
diff --git a/programs/pkey/mpi_demo.c b/programs/pkey/mpi_demo.c
index 6341752..eed8dfc 100644
--- a/programs/pkey/mpi_demo.c
+++ b/programs/pkey/mpi_demo.c
@@ -101,11 +101,6 @@
         mbedtls_printf( "\nAn error occurred.\n" );
     }
 
-#if defined(_WIN32)
-    mbedtls_printf( "  Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_FS_IO */
diff --git a/programs/pkey/pk_decrypt.c b/programs/pkey/pk_decrypt.c
index f1bfd8a..b09b6b8 100644
--- a/programs/pkey/pk_decrypt.c
+++ b/programs/pkey/pk_decrypt.c
@@ -162,11 +162,6 @@
     }
 #endif
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_PK_PARSE_C && MBEDTLS_FS_IO &&
diff --git a/programs/pkey/pk_encrypt.c b/programs/pkey/pk_encrypt.c
index 293c0a0..3df11f7 100644
--- a/programs/pkey/pk_encrypt.c
+++ b/programs/pkey/pk_encrypt.c
@@ -165,11 +165,6 @@
     }
 #endif
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_PK_PARSE_C && MBEDTLS_ENTROPY_C &&
diff --git a/programs/pkey/pk_sign.c b/programs/pkey/pk_sign.c
index 2ab428d..7b5d8e1 100644
--- a/programs/pkey/pk_sign.c
+++ b/programs/pkey/pk_sign.c
@@ -164,11 +164,6 @@
     }
 #endif
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_ENTROPY_C &&
diff --git a/programs/pkey/pk_verify.c b/programs/pkey/pk_verify.c
index 5173507..e82653b 100644
--- a/programs/pkey/pk_verify.c
+++ b/programs/pkey/pk_verify.c
@@ -136,11 +136,6 @@
     }
 #endif
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_SHA256_C &&
diff --git a/programs/pkey/rsa_decrypt.c b/programs/pkey/rsa_decrypt.c
index 42ec6a7..c01a5cf 100644
--- a/programs/pkey/rsa_decrypt.c
+++ b/programs/pkey/rsa_decrypt.c
@@ -196,11 +196,6 @@
     mbedtls_mpi_free( &D ); mbedtls_mpi_free( &E ); mbedtls_mpi_free( &DP );
     mbedtls_mpi_free( &DQ ); mbedtls_mpi_free( &QP );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_RSA_C && MBEDTLS_FS_IO */
diff --git a/programs/pkey/rsa_encrypt.c b/programs/pkey/rsa_encrypt.c
index f7ff68f..25a42d3 100644
--- a/programs/pkey/rsa_encrypt.c
+++ b/programs/pkey/rsa_encrypt.c
@@ -172,11 +172,6 @@
     mbedtls_entropy_free( &entropy );
     mbedtls_rsa_free( &rsa );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_RSA_C && MBEDTLS_ENTROPY_C &&
diff --git a/programs/pkey/rsa_genkey.c b/programs/pkey/rsa_genkey.c
index e48050a..67711bd 100644
--- a/programs/pkey/rsa_genkey.c
+++ b/programs/pkey/rsa_genkey.c
@@ -161,11 +161,6 @@
     mbedtls_ctr_drbg_free( &ctr_drbg );
     mbedtls_entropy_free( &entropy );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_ENTROPY_C && MBEDTLS_RSA_C &&
diff --git a/programs/pkey/rsa_sign.c b/programs/pkey/rsa_sign.c
index 5aa592d..1df9b13 100644
--- a/programs/pkey/rsa_sign.c
+++ b/programs/pkey/rsa_sign.c
@@ -177,11 +177,6 @@
     mbedtls_mpi_free( &D ); mbedtls_mpi_free( &E ); mbedtls_mpi_free( &DP );
     mbedtls_mpi_free( &DQ ); mbedtls_mpi_free( &QP );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_RSA_C && MBEDTLS_SHA256_C &&
diff --git a/programs/pkey/rsa_sign_pss.c b/programs/pkey/rsa_sign_pss.c
index 7ec7335..8078ab6 100644
--- a/programs/pkey/rsa_sign_pss.c
+++ b/programs/pkey/rsa_sign_pss.c
@@ -172,11 +172,6 @@
     mbedtls_ctr_drbg_free( &ctr_drbg );
     mbedtls_entropy_free( &entropy );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_ENTROPY_C && MBEDTLS_RSA_C &&
diff --git a/programs/pkey/rsa_verify.c b/programs/pkey/rsa_verify.c
index 1b3e193..a8b1abb 100644
--- a/programs/pkey/rsa_verify.c
+++ b/programs/pkey/rsa_verify.c
@@ -151,11 +151,6 @@
 
     mbedtls_rsa_free( &rsa );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_RSA_C && MBEDTLS_SHA256_C &&
diff --git a/programs/pkey/rsa_verify_pss.c b/programs/pkey/rsa_verify_pss.c
index d6634ba..3a20778 100644
--- a/programs/pkey/rsa_verify_pss.c
+++ b/programs/pkey/rsa_verify_pss.c
@@ -146,11 +146,6 @@
 exit:
     mbedtls_pk_free( &pk );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_RSA_C && MBEDTLS_SHA256_C &&
diff --git a/programs/ssl/dtls_client.c b/programs/ssl/dtls_client.c
index 2bebb0d..e06d535 100644
--- a/programs/ssl/dtls_client.c
+++ b/programs/ssl/dtls_client.c
@@ -346,11 +346,6 @@
     mbedtls_ctr_drbg_free( &ctr_drbg );
     mbedtls_entropy_free( &entropy );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     /* Shell can not handle large exit numbers -> 1 for errors */
     if( ret < 0 )
         ret = 1;
diff --git a/programs/ssl/dtls_server.c b/programs/ssl/dtls_server.c
index 5d1cccb..9317449 100644
--- a/programs/ssl/dtls_server.c
+++ b/programs/ssl/dtls_server.c
@@ -416,11 +416,6 @@
     mbedtls_ctr_drbg_free( &ctr_drbg );
     mbedtls_entropy_free( &entropy );
 
-#if defined(_WIN32)
-    printf( "  Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     /* Shell can not handle large exit numbers -> 1 for errors */
     if( ret < 0 )
         ret = 1;
diff --git a/programs/ssl/ssl_client1.c b/programs/ssl/ssl_client1.c
index 3f7256f..a80ff71 100644
--- a/programs/ssl/ssl_client1.c
+++ b/programs/ssl/ssl_client1.c
@@ -305,11 +305,6 @@
     mbedtls_ctr_drbg_free( &ctr_drbg );
     mbedtls_entropy_free( &entropy );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_ENTROPY_C && MBEDTLS_SSL_TLS_C &&
diff --git a/programs/ssl/ssl_client2.c b/programs/ssl/ssl_client2.c
index c678ce0..97b786a 100644
--- a/programs/ssl/ssl_client2.c
+++ b/programs/ssl/ssl_client2.c
@@ -3151,14 +3151,6 @@
     mbedtls_memory_buffer_alloc_free();
 #endif  /* MBEDTLS_MEMORY_BUFFER_ALLOC_C */
 
-#if defined(_WIN32)
-    if( opt.query_config_mode == DFL_QUERY_CONFIG_MODE )
-    {
-        mbedtls_printf( "  + Press Enter to exit this program.\n" );
-        fflush( stdout ); getchar();
-    }
-#endif
-
     // Shell can not handle large exit numbers -> 1 for errors
     if( ret < 0 )
         ret = 1;
diff --git a/programs/ssl/ssl_fork_server.c b/programs/ssl/ssl_fork_server.c
index 694fc3b..07b3e6f 100644
--- a/programs/ssl/ssl_fork_server.c
+++ b/programs/ssl/ssl_fork_server.c
@@ -407,11 +407,6 @@
     mbedtls_ctr_drbg_free( &ctr_drbg );
     mbedtls_entropy_free( &entropy );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_ENTROPY_C &&
diff --git a/programs/ssl/ssl_mail_client.c b/programs/ssl/ssl_mail_client.c
index 32960ad..664a384 100644
--- a/programs/ssl/ssl_mail_client.c
+++ b/programs/ssl/ssl_mail_client.c
@@ -848,11 +848,6 @@
     mbedtls_ctr_drbg_free( &ctr_drbg );
     mbedtls_entropy_free( &entropy );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_ENTROPY_C && MBEDTLS_SSL_TLS_C &&
diff --git a/programs/ssl/ssl_pthread_server.c b/programs/ssl/ssl_pthread_server.c
index a8db4d8..ac14789 100644
--- a/programs/ssl/ssl_pthread_server.c
+++ b/programs/ssl/ssl_pthread_server.c
@@ -515,11 +515,6 @@
     mbedtls_memory_buffer_alloc_free();
 #endif
 
-#if defined(_WIN32)
-    mbedtls_printf( "  Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( ret );
 }
 
diff --git a/programs/ssl/ssl_server.c b/programs/ssl/ssl_server.c
index 95557fb..3b66372 100644
--- a/programs/ssl/ssl_server.c
+++ b/programs/ssl/ssl_server.c
@@ -386,11 +386,6 @@
     mbedtls_ctr_drbg_free( &ctr_drbg );
     mbedtls_entropy_free( &entropy );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( ret );
 }
 #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_ENTROPY_C &&
diff --git a/programs/ssl/ssl_server2.c b/programs/ssl/ssl_server2.c
index aca7caa..c144b05 100644
--- a/programs/ssl/ssl_server2.c
+++ b/programs/ssl/ssl_server2.c
@@ -4231,11 +4231,6 @@
     if( opt.query_config_mode == DFL_QUERY_CONFIG_MODE )
     {
         mbedtls_printf( " done.\n" );
-
-#if defined(_WIN32)
-        mbedtls_printf( "  + Press Enter to exit this program.\n" );
-        fflush( stdout ); getchar();
-#endif
     }
 
     // Shell can not handle large exit numbers -> 1 for errors
diff --git a/programs/test/benchmark.c b/programs/test/benchmark.c
index efc905c..a6d83e7 100644
--- a/programs/test/benchmark.c
+++ b/programs/test/benchmark.c
@@ -1280,11 +1280,6 @@
     mbedtls_memory_buffer_alloc_free();
 #endif
 
-#if defined(_WIN32)
-    mbedtls_printf( "  Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( 0 );
 }
 
diff --git a/programs/test/selftest.c b/programs/test/selftest.c
index 0c40686..a314bd2 100644
--- a/programs/test/selftest.c
+++ b/programs/test/selftest.c
@@ -537,10 +537,6 @@
         {
             mbedtls_printf( "  [ All tests PASS ]\n\n" );
         }
-#if defined(_WIN32)
-        mbedtls_printf( "  Press Enter to exit this program.\n" );
-        fflush( stdout ); getchar();
-#endif
     }
 
     if( suites_failed > 0)
diff --git a/programs/test/udp_proxy.c b/programs/test/udp_proxy.c
index 971fdb4..fd71e18 100644
--- a/programs/test/udp_proxy.c
+++ b/programs/test/udp_proxy.c
@@ -1015,11 +1015,6 @@
     mbedtls_net_free( &server_fd );
     mbedtls_net_free( &listen_fd );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 
diff --git a/programs/util/pem2der.c b/programs/util/pem2der.c
index e273200..cf6a56c 100644
--- a/programs/util/pem2der.c
+++ b/programs/util/pem2der.c
@@ -279,11 +279,6 @@
 exit:
     free( pem_buffer );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_BASE64_C && MBEDTLS_FS_IO */
diff --git a/programs/util/strerror.c b/programs/util/strerror.c
index 4b776d3..f91da13 100644
--- a/programs/util/strerror.c
+++ b/programs/util/strerror.c
@@ -78,11 +78,6 @@
         mbedtls_printf("Last error was: -0x%04x - %s\n\n", (unsigned int) -val, error_buf );
     }
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( val );
 }
 #endif /* MBEDTLS_ERROR_C */
diff --git a/programs/x509/cert_app.c b/programs/x509/cert_app.c
index 3d8f37b..985b970 100644
--- a/programs/x509/cert_app.c
+++ b/programs/x509/cert_app.c
@@ -486,11 +486,6 @@
     mbedtls_ctr_drbg_free( &ctr_drbg );
     mbedtls_entropy_free( &entropy );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_ENTROPY_C && MBEDTLS_SSL_TLS_C &&
diff --git a/programs/x509/cert_req.c b/programs/x509/cert_req.c
index ed42079..7460bbf 100644
--- a/programs/x509/cert_req.c
+++ b/programs/x509/cert_req.c
@@ -389,11 +389,6 @@
     mbedtls_ctr_drbg_free( &ctr_drbg );
     mbedtls_entropy_free( &entropy );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_X509_CSR_WRITE_C && MBEDTLS_PK_PARSE_C && MBEDTLS_FS_IO &&
diff --git a/programs/x509/cert_write.c b/programs/x509/cert_write.c
index 763f868..793982d 100644
--- a/programs/x509/cert_write.c
+++ b/programs/x509/cert_write.c
@@ -793,11 +793,6 @@
     mbedtls_ctr_drbg_free( &ctr_drbg );
     mbedtls_entropy_free( &entropy );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_X509_CRT_WRITE_C && MBEDTLS_X509_CRT_PARSE_C &&
diff --git a/programs/x509/crl_app.c b/programs/x509/crl_app.c
index 2720b1d..aa353be 100644
--- a/programs/x509/crl_app.c
+++ b/programs/x509/crl_app.c
@@ -138,11 +138,6 @@
 exit:
     mbedtls_x509_crl_free( &crl );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_RSA_C && MBEDTLS_X509_CRL_PARSE_C &&
diff --git a/programs/x509/req_app.c b/programs/x509/req_app.c
index fd316e2..24324ff 100644
--- a/programs/x509/req_app.c
+++ b/programs/x509/req_app.c
@@ -138,11 +138,6 @@
 exit:
     mbedtls_x509_csr_free( &csr );
 
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
     mbedtls_exit( exit_code );
 }
 #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_RSA_C && MBEDTLS_X509_CSR_PARSE_C &&
diff --git a/tests/suites/test_suite_psa_crypto.data b/tests/suites/test_suite_psa_crypto.data
index 513e7a6..7250753 100644
--- a/tests/suites/test_suite_psa_crypto.data
+++ b/tests/suites/test_suite_psa_crypto.data
@@ -2315,6 +2315,18 @@
 depends_on:PSA_WANT_ALG_CCM_STAR_NO_TAG:PSA_WANT_KEY_TYPE_AES
 cipher_decrypt:PSA_ALG_CCM_STAR_NO_TAG:PSA_KEY_TYPE_AES:"90929a4b0ac65b350ad1591611fe4829":"5a8aa485c316e9403aff859fbb":"4bfe4e35784f0a65b545477e5e2f4bae0e1e6fa717eaf2cb":"a16a2e741f1cd9717285b6d882c1fc53655e9773761ad697"
 
+PSA symmetric decrypt: ChaCha20, RFC7539 keystream
+depends_on:PSA_WANT_ALG_STREAM_CIPHER:PSA_WANT_KEY_TYPE_CHACHA20
+# Keystream from RFC 7539 §2.4.2, with an extra 64-byte output block prepended
+# because the test vector starts at counter=1 but our API starts at counter=0.
+cipher_decrypt:PSA_ALG_STREAM_CIPHER:PSA_KEY_TYPE_CHACHA20:"000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f":"000000000000004a00000000":"00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000":"af051e40bba0354981329a806a140eafd258a22a6dcb4bb9f6569cb3efe2deaf837bd87ca20b5ba12081a306af0eb35c41a239d20dfc74c81771560d9c9c1e4b224f51f3401bd9e12fde276fb8631ded8c131f823d2c06e27e4fcaec9ef3cf788a3b0aa372600a92b57974cded2b9334794cba40c63e34cdea212c4cf07d41b769a6749f3f630f4122cafe28ec4dc47e26d4346d70b98c73f3e9c53ac40c5945398b6eda1a832c89c167eacd901d7e2bf363"
+
+PSA symmetric decrypt: ChaCha20, RFC7539 sunscreen
+depends_on:PSA_WANT_ALG_STREAM_CIPHER:PSA_WANT_KEY_TYPE_CHACHA20
+# Test vector from RFC 7539 §2.4.2, with an extra 64-byte block prepended
+# because the test vector starts at counter=1 but our API starts at counter=0.
+cipher_decrypt:PSA_ALG_STREAM_CIPHER:PSA_KEY_TYPE_CHACHA20:"000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f":"000000000000004a00000000":"fb6d7b60e9e67669b607a9b94a606bdca678d44f0ebf24cbd623efd69cc2bdc0f615ac19d0366a8d00e3d6728f5ee01d61d74ab77edc17a7621f2268eea12e656e2e359a2568f98041ba0728dd0d6981e97e7aec1d4360c20a27afccfd9fae0bf91b65c5524733ab8f593dabcd62b3571639d624e65152ab8f530c359f0861d807ca0dbf500d6a6156a38e088a22b65e52bc514d16ccf806818ce91ab77937365af90bbf74a35be6b40b8eedf2785e42874d":"546865205246432037353339207465737420766563746f72207573657320636f756e7465723d312c2062757420505341207573657320636f756e7465723d302e4c616469657320616e642047656e746c656d656e206f662074686520636c617373206f66202739393a204966204920636f756c64206f6666657220796f75206f6e6c79206f6e652074697020666f7220746865206675747572652c2073756e73637265656e20776f756c642062652069742e"
+
 PSA symmetric decrypt multipart: AES-ECB, 0 bytes, good
 depends_on:PSA_WANT_ALG_ECB_NO_PADDING:PSA_WANT_KEY_TYPE_AES
 cipher_decrypt_multipart:PSA_ALG_ECB_NO_PADDING:PSA_KEY_TYPE_AES:"2b7e151628aed2a6abf7158809cf4f3c":"":"":0:0:0:"":PSA_SUCCESS
@@ -2611,6 +2623,12 @@
 depends_on:PSA_WANT_ALG_STREAM_CIPHER:PSA_WANT_KEY_TYPE_CHACHA20
 cipher_encrypt_multipart:PSA_ALG_STREAM_CIPHER:PSA_KEY_TYPE_CHACHA20:"4bddc98c551a95395ef719557f813656b566bc45aac04eca3866324cc75489f2":"a170d9349d24955aa4501891":"00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000":14:14:50:"9ba7d8de0c6b579fc436e368619e09228070d23246c836d6c6b4c476af6f5eb2b78fbe809d03f7881e6af28cfe3746e8dcf1eb7f762fe7d003141f1539a6cec4":PSA_SUCCESS
 
+PSA symmetric encryption multipart: ChaCha20, RFC7539 sunscreen
+depends_on:PSA_WANT_ALG_STREAM_CIPHER:PSA_WANT_KEY_TYPE_CHACHA20
+# Test vector from RFC 7539 §2.4.2, with an extra 64-byte block prepended
+# because the test vector starts at counter=1 but our API starts at counter=0.
+cipher_encrypt_multipart:PSA_ALG_STREAM_CIPHER:PSA_KEY_TYPE_CHACHA20:"000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f":"000000000000004a00000000":"546865205246432037353339207465737420766563746f72207573657320636f756e7465723d312c2062757420505341207573657320636f756e7465723d302e4c616469657320616e642047656e746c656d656e206f662074686520636c617373206f66202739393a204966204920636f756c64206f6666657220796f75206f6e6c79206f6e652074697020666f7220746865206675747572652c2073756e73637265656e20776f756c642062652069742e":64:64:114:"fb6d7b60e9e67669b607a9b94a606bdca678d44f0ebf24cbd623efd69cc2bdc0f615ac19d0366a8d00e3d6728f5ee01d61d74ab77edc17a7621f2268eea12e656e2e359a2568f98041ba0728dd0d6981e97e7aec1d4360c20a27afccfd9fae0bf91b65c5524733ab8f593dabcd62b3571639d624e65152ab8f530c359f0861d807ca0dbf500d6a6156a38e088a22b65e52bc514d16ccf806818ce91ab77937365af90bbf74a35be6b40b8eedf2785e42874d":PSA_SUCCESS
+
 PSA symmetric decrypt multipart: ChaCha20, K=rand N=rand
 depends_on:PSA_WANT_ALG_STREAM_CIPHER:PSA_WANT_KEY_TYPE_CHACHA20
 cipher_decrypt_multipart:PSA_ALG_STREAM_CIPHER:PSA_KEY_TYPE_CHACHA20:"4bddc98c551a95395ef719557f813656b566bc45aac04eca3866324cc75489f2":"a170d9349d24955aa4501891":"00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000":64:64:0:"9ba7d8de0c6b579fc436e368619e09228070d23246c836d6c6b4c476af6f5eb2b78fbe809d03f7881e6af28cfe3746e8dcf1eb7f762fe7d003141f1539a6cec4":PSA_SUCCESS