1769 search results - page 121 / 354 » Cryptography |
152
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TCC
2005
Springer
15 years 8 months ago
2005
Springer
We address the problem of using untrusted (potentially malicious) cryptographic helpers. We provide a formal security definition for securely outsourcing computations from a comp...
131
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EUROCRYPT
2004
Springer
15 years 8 months ago
2004
Springer
Informally, a public-key steganography protocol allows two parties, who have never met or exchanged a secret, to send hidden messages over a public channel so that an adversary can...
145
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CRYPTO
2003
Springer
15 years 8 months ago
2003
Springer
Abstract. A significant effort has recently been made to rigorously relate the formal treatment of cryptography with the computational one. A first substantial step in this dire...
128
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EUROCRYPT
2003
Springer
15 years 8 months ago
2003
Springer
We introduce captcha, an automated test that humans can pass, but current computer programs can’t pass: any program that has high success over a captcha can be used to solve an u...
FC
2003
Springer
15 years 8 months ago
2003
Springer
Abstract. Thanks to their broad international acceptance and availability in high denominations, there is widespread concern that Euro banknotes may provide an attractive new curre...