Datasheet

Table Of Contents
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Operation Clock Cycles Timing One
Block
Regular Generation of two primes, Prime_Length=2048 bits,
W=4, Rabin Miller Iterations Number = 3, (Standard Deviation
for 200 samples)
Std Dev = 3,05
GCycles
Std Dev = 25.4s
43.3.8.3.3 Service Timing for ECDSA on Prime Field
In the following table, ECDSA signature generation uses the ZpEcDsaGenerateFast service and
signature verification uses ZpEcDsaQuickVerify
Table 43-118. ECDSA GF(p)
Operation Clock Cycles Timing One block
ECDSA GF(p) 256 Generate Fast 2.72 MCycles 22.7 ms
ECDSA GF(p) 256 Verify Quick W=(6,6)
Scalar in Classical RAM
1.78 MCycles 14.8 ms
ECDSA GF(p) 256 Verify Quick W=(4,4)
Scalar in PUKCC RAM
1.83 MCycles 15.2 ms
ECDSA GF(p) 384 Generate Fast 6.28 MCycles 52.3 ms
ECDSA GF(p) 384 Verify Quick W=(5,5)
Scalar in Classical RAM
3.93 MCycles 32.8 ms
ECDSA GF(p) 384 Verify Quick W=(4,4)
Scalar in PUKCC RAM
4.09 MCycles 34.1 ms
ECDSA GF(p) 521 Generate Fast 13.4 MCycles 112 ms
ECDSA GF(p) 521 Verify Quick W=(4,5)
Scalar in Classical RAM
8.4 MCycles 70.3 ms
ECDSA GF(p) 521 Verify Quick W=(4,4)
Scalar in PUKCC RAM
8.6 MCycles 72ms
43.3.8.3.4 Service Timing for ECDSA on Binary Field
In the following table, ECDSA signature generation uses the GF2NEcDsaGenerateFast service and
signature verification uses GF2NEcDsaVerifyFast
Table 43-119. ECDSA GF(2
n
)
Operation CPU Cycles Timing One block
ECDSA GF(2
n
) B283 Generate Fast 3.21 MCycles 26.8 ms
ECDSA GF(2
n
) B283 Verify 6.44 MCycles 53.5 ms
ECDSA GF(2
n
) B409 Generate Fast 6.93 Mcycles 57.8 ms
SAM D5x/E5x Family Data Sheet
Public Key Cryptography Controller (PUKCC)
© 2019 Microchip Technology Inc.
Datasheet
DS60001507E-page 1572