XrdCryptosslMsgDigest Class Reference

#include <XrdCryptosslMsgDigest.hh>

Inheritance diagram for XrdCryptosslMsgDigest:

Collaboration diagram for XrdCryptosslMsgDigest:

Public Member Functions
	XrdCryptosslMsgDigest (const char *dgst)
virtual	~XrdCryptosslMsgDigest ()
int	Final ()
bool	IsValid ()
int	Reset (const char *dgst=0)
int	Update (const char *b, int l)
Public Member Functions inherited from XrdCryptoMsgDigest
	XrdCryptoMsgDigest ()
virtual	~XrdCryptoMsgDigest ()
bool	operator== (const XrdCryptoMsgDigest md)
Public Member Functions inherited from XrdCryptoBasic
	XrdCryptoBasic (const char *t=0, int l=0, const char *b=0)
virtual	~XrdCryptoBasic ()
virtual XrdSutBucket *	AsBucket ()
char *	AsHexString ()
virtual char *	Buffer () const
virtual int	FromHex (const char *hex)
virtual int	Length () const
virtual int	SetBuffer (int l, const char *b)
virtual int	SetLength (int l)
virtual int	SetType (const char *t)
virtual char *	Type () const
virtual void	UseBuffer (int l, const char *b)

Static Public Member Functions
static bool	IsSupported (const char *dgst)

Detailed Description

Definition at line 46 of file XrdCryptosslMsgDigest.hh.

Constructor & Destructor Documentation

XrdCryptosslMsgDigest()

XrdCryptosslMsgDigest::XrdCryptosslMsgDigest

(

const char *

dgst

)

Definition at line 40 of file XrdCryptosslMsgDigest.cc.

                      : XrdCryptoMsgDigest(), valid(0), mdctx(0)
{
   // Constructor.
   // Init the message digest calculation
 
   SetType(0);
   Init(dgst);
}

References XrdCryptoMsgDigest::XrdCryptoMsgDigest(), and XrdCryptoBasic::SetType().

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~XrdCryptosslMsgDigest()

XrdCryptosslMsgDigest::~XrdCryptosslMsgDigest ( )

virtual

Definition at line 51 of file XrdCryptosslMsgDigest.cc.

{
   // Destructor.
 
   if (valid) {
      unsigned char mdval[EVP_MAX_MD_SIZE];
      EVP_DigestFinal_ex(mdctx, mdval, 0);
      EVP_MD_CTX_destroy(mdctx);
   }
}

Member Function Documentation

Final()

int XrdCryptosslMsgDigest::Final ( )

virtual

Reimplemented from XrdCryptoMsgDigest.

Definition at line 137 of file XrdCryptosslMsgDigest.cc.

{
   // Finalize message digest calculation.
   // Finalize the operation
   // Returns -1 if unsuccessful (digest not initialized), 0 otherwise.
   EPNAME("MsgDigest::Final");
 
   // MD outputs in these variables
   unsigned char mdval[EVP_MAX_MD_SIZE] = {0};
   unsigned int mdlen = 0;
 
   if (Type()) {
      // Finalize what we have
      if (EVP_DigestFinal_ex(mdctx, mdval, &mdlen) == 1) {
         // Save result
         SetBuffer(mdlen,(const char *)mdval);
         // Notify, if requested
         DEBUG("result length is "<<mdlen <<
               " bytes (hex: " << AsHexString() <<")");
         return 0;
      } else {
         PRINT("ERROR: problems finalizing digest");
      }
   }
   return -1;   
}

References XrdCryptoBasic::AsHexString(), DEBUG, EPNAME, PRINT, XrdCryptoBasic::SetBuffer(), and XrdCryptoBasic::Type().

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IsSupported()

bool XrdCryptosslMsgDigest::IsSupported ( const char * dgst )

static

Definition at line 63 of file XrdCryptosslMsgDigest.cc.

{
   // Check if the specified MD is supported
 
   return (EVP_get_digestbyname(dgst) != 0);
}

Referenced by XrdCryptosslFactory::SupportedMsgDigest().

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IsValid()

bool XrdCryptosslMsgDigest::IsValid ( )

inlinevirtual

Reimplemented from XrdCryptoMsgDigest.

Definition at line 59 of file XrdCryptosslMsgDigest.hh.

{ return valid; }

Reset()

int XrdCryptosslMsgDigest::Reset ( const char * dgst = 0 )

virtual

Reimplemented from XrdCryptoMsgDigest.

Definition at line 106 of file XrdCryptosslMsgDigest.cc.

{
   // Re-Init the message digest calculation
   if (valid) {
      unsigned char mdval[EVP_MAX_MD_SIZE];
      EVP_DigestFinal_ex(mdctx, mdval, 0);
      SetBuffer(0,0);
      EVP_MD_CTX_destroy(mdctx);
   }
   valid = 0;
   Init(dgst);
   if (!valid) return -1;
 
   return 0;
}

References XrdCryptoBasic::SetBuffer().

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Update()

int XrdCryptosslMsgDigest::Update ( const char * b, int l )

virtual

Reimplemented from XrdCryptoMsgDigest.

Definition at line 123 of file XrdCryptosslMsgDigest.cc.

{
   // Update message digest with the MD of l bytes at b.
   // Create the internal buffer if needed (first call)
   // Returns -1 if unsuccessful (digest not initialized), 0 otherwise.
 
   if (Type()) {
      EVP_DigestUpdate(mdctx, (char *)b, l);
      return 0;
   }
   return -1;   
}

References XrdCryptoBasic::Type().

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The documentation for this class was generated from the following files:

• XrdCryptosslMsgDigest.hh
• XrdCryptosslMsgDigest.cc