PKCS12 etc.: Add hints on using -legacy and -provider-path options

Fixes #14790

Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14891)

1 files changed, 10 insertions, 0 deletions

diff --git a/doc/man1/openssl-pkcs12.pod.in b/doc/man1/openssl-pkcs12.pod.in
index b367be2b7f..7a75d9ca32 100644
--- a/doc/man1/openssl-pkcs12.pod.in
+++ b/doc/man1/openssl-pkcs12.pod.in
@@ -85,8 +85,13 @@ The PKCS#12 export encryption and MAC options such as B<-certpbe> and B<-iter>
 and many further options such as B<-chain> are relevant only with B<-export>.
 Conversely, the options regarding encryption of private keys when outputting
 PKCS#12 input are relevant only when the B<-export> option is not given.
+
 The default encryption algorithm is AES-256-CBC with PBKDF2 for key derivation.
 
+When encountering problems loading legacy PKCS#12 files that involve,
+for example, RC2-40-CBC,
+try using the B<-legacy> option and, if needed, the B<-provider-path> option.
+
 =over 4
 
 =item B<-help>
@@ -132,6 +137,11 @@ and so the input is just verified.
 =item B<-legacy>
 
 Use legacy mode of operation and automatically load the legacy provider.
+If OpenSSL is not installed system-wide,
+it is necessary to also use, for example, C<-provider-path ./providers>
+or to set the environment variable B<OPENSSL_MODULES>
+to point to the directory where the providers can be found.
+
 In the legacy mode, the default algorithm for certificate encryption
 is RC2_CBC or 3DES_CBC depending on whether the RC2 cipher is enabled
 in the build. The default algorithm for private key encryption is 3DES_CBC.