cryptography: securing the information age
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Cryptography: Securing the Information Age. SUBMITTED BY: SUBMITTED TO: ANAND MAHALAHA Miss. A.A. KUJUR 0601IT081006 (HOD I.T.). Agenda. Definitions - PowerPoint PPT PresentationTRANSCRIPT
SUBMITTED BY: SUBMITTED TO:ANAND MAHALAHA Miss. A.A. KUJUR 0601IT081006 (HOD I.T.)
SUBMITTED BY: SUBMITTED TO:ANAND MAHALAHA Miss. A.A. KUJUR 0601IT081006 (HOD I.T.)
CRYPTOGRAPHY: SECURING THE INFORMATION AGE
CRYPTOGRAPHY: SECURING THE INFORMATION AGE
AgendaAgenda
Definitions
Why cryptography is important?
Available technologies
Benefits & problems
Essential TermsEssential Terms
Cryptography EncryptionPlain text Cipher text
DecryptionCipher text Plain text
Cryptanalysis
Cryptology
Information Security for…Information Security for…
Defending against external/internal hackers
Defending against industrial espionage
Securing E-commerce
Securing bank accounts/electronic transfers
Securing intellectual property
Avoiding liability
Types of Secret WritingTypes of Secret Writing
Secret writing
Steganography Cryptography
SteganographySteganography
Steganography – covered writing – is an art of hiding information
Popular contemporary steganographic technologies hide information in images
Hiding information in pictures
Hiding information in pictures
Image in which to hide another image
Image to hide within the other image
Retrieving information from pictures
Retrieving information from pictures
Image with other hidden within
Recreated image
Types of Secret WritingTypes of Secret Writing
Secret writing
Steganography Cryptography
Substitution Transposition
Code
Cipher
Benefits of Cryptographic Technologies
Benefits of Cryptographic Technologies
Data hiding
Data integrity Authentication of
message originator
Electronic certification and digital signature
Potential Problems with Cryptographic Technologies?
Potential Problems with Cryptographic Technologies?
False sense of security if badly implemented
Government regulation of cryptographic technologies/export restrictions
Encryption prohibited in some countries
How Secure are Today’s Technologies?
How Secure are Today’s Technologies?
Encryption does not guarantee security!
Many ways to beat a crypto system NOT dependent on cryptanalysis, such as:– Viruses, worms, hackers, etc.– Unauthorized physical access to secret
data
Cryptography is only one element of comprehensive computer security
DOUBTS…???DOUBTS…???
Your questions are welcome!