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Third Party Openssl
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6ef7b78e
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Third Party Openssl
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6ef7b78e
编写于
8月 11, 2004
作者:
D
Dr. Stephen Henson
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6ef7b78e
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@@ -52,6 +52,7 @@ OpenSSL - Frequently Asked Questions
* Is OpenSSL thread-safe?
* I've compiled a program under Windows and it crashes: why?
* How do I read or write a DER encoded buffer using the ASN1 functions?
* OpenSSL uses DER but I need BER format: does OpenSSL support BER?
* I've tried using <M_some_evil_pkcs12_macro> and I get errors why?
* I've called <some function> and it fails, why?
* I just get a load of numbers for the error output, what do they mean?
...
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@@ -60,6 +61,7 @@ OpenSSL - Frequently Asked Questions
* Can I use OpenSSL's SSL library with non-blocking I/O?
* Why doesn't my server application receive a client certificate?
* Why does compilation fail due to an undefined symbol NID_uniqueIdentifier?
* I think I've detected a memory leak, is this a bug?
===============================================================================
...
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@@ -683,6 +685,20 @@ and attempts to free the buffer will have unpredictable results
because it no longer points to the same address.
* OpenSSL uses DER but I need BER format: does OpenSSL support BER?
The short answer is yes, because DER is a special case of BER and OpenSSL
ASN1 decoders can process BER.
The longer answer is that ASN1 structures can be encoded in a number of
different ways. One set of ways is the Basic Encoding Rules (BER) with various
permissible encodings. A restriction of BER is the Distinguished Encoding
Rules (DER): these uniquely specify how a given structure is encoded.
Therefore, because DER is a special case of BER, DER is an acceptable encoding
for BER.
* I've tried using <M_some_evil_pkcs12_macro> and I get errors why?
This usually happens when you try compiling something using the PKCS#12
...
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@@ -765,5 +781,17 @@ The correct name according to RFC2256 (LDAP) is x500UniqueIdentifier.
Change your code to use the new name when compiling against OpenSSL 0.9.7.
* I think I've detected a memory leak, is this a bug?
In most cases the cause of an apparent memory leak is an OpenSSL internal table
that is allocated when an application starts up. Since such tables do not grow
in size over time they are harmless.
These internal tables can be freed up when an application closes using various
functions. Currently these include: EVP_cleanup(), ERR_remove_state(),
ERR_free_strings(), ENGINE_cleanup(), CONF_modules_unload() and
CRYPTO_cleanup_all_ex_data().
===============================================================================
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